---
title: "52 Knowledge Quotes By Bertrand Russell"
description: "Knowledge quotes on love, curiosity, and imagination."
image: "https://sms4smile.com/quotes/i/e5c/bertrand-russell-69_inference_whatever-we-know-without-inference-is-me_2109981.jpg"
---

> [Whatever we know without inference is mental.](https://sms4smile.com/quotes/bertrand-russell/whatever-we-know-without-inference-is-mental/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/e5c/bertrand-russell-69_inference_whatever-we-know-without-inference-is-me_2109981.jpg)

> [The pursuit of knowledge is, I think, mainly actuated by love of power](https://sms4smile.com/quotes/bertrand-russell/the-pursuit-of-knowledge-is-i-think-mainly-actuated-by-love-of-power-2/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/944/bertrand-russell-69_knowledge_the-pursuit-of-knowledge-is-i-think-main_1940408.jpg)

> [Science may set limits to knowledge, but should not set limits to imagination.](https://sms4smile.com/quotes/bertrand-russell/science-may-set-limits-to-knowledge-but-should-not-set-limits-to/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/401/bertrand-russell-69_accounts_science-may-set-limits-to-knowledge-but_478501.jpg)

> [Love and knowledge led upwards to the heavens.](https://sms4smile.com/quotes/bertrand-russell/love-and-knowledge-led-upwards-to-the-heavens/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/98e/bertrand-russell-69_heaven_love-and-knowledge-led-upwards-to-the-he_2070658.jpg)

> [Every increase in knowledge requires an increase in wisdom](https://sms4smile.com/quotes/bertrand-russell/every-increase-in-knowledge-requires-an-increase-in-wisdom/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/748/bertrand-russell-69_increase_every-increase-in-knowledge-requires-an_3176452.jpg)

> [There is much pleasure to be gained from useless knowledge.](https://sms4smile.com/quotes/bertrand-russell/there-is-much-pleasure-to-be-gained-from-useless-knowledge/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/033/bertrand-russell-69_knowledge_there-is-much-pleasure-to-be-gained-from_488225.jpg)

> [The good life is one inspired by love and guided by knowledge.](https://sms4smile.com/quotes/bertrand-russell/the-good-life-is-one-inspired-by-love-and-guided-by-knowledge/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/2ef/bertrand-russell-69_good-life_the-good-life-is-one-inspired-by-love-an_1876734.jpg)

> [Be curious always! For knowledge will not acquire you; you must acquire it.](https://sms4smile.com/quotes/bertrand-russell/be-curious-always-for-knowledge-will-not-acquire-you-you-must-acquire/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/a00/bertrand-russell-69_curiosity_be-curious-always-for-knowledge-will-not_1097304.jpg)

> [We shall say that we have acquaintance with anything of which we are directly aware, without the intermediary of any process of…](https://sms4smile.com/quotes/bertrand-russell/we-shall-say-that-we-have-acquaintance-with-anything-of-which-we-are/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/992/bertrand-russell-69_acquaintance_we-shall-say-that-we-have-acquaintance-w_2271090.jpg)

> [Right conduct can never, except by some rare accident, be promoted by ignorance or hindered by knowledge.](https://sms4smile.com/quotes/bertrand-russell/right-conduct-can-never-except-by-some-rare-accident-be-promoted-by/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/20b/bertrand-russell-69_accidents_right-conduct-can-never-except-by-some-r_1186948.jpg)

> [“I do not think there can be any defense for the view that knowledge is ever undesirable.”](https://sms4smile.com/quotes/bertrand-russell/i-do-not-think-there-can-be-any-defense-for-the-view-that-knowledge/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/8bb/bertrand-russell-69_knowledge_i-do-not-think-there-can-be-any-defense_1722951.jpg)

> [“The ideal of an “all-round” education is out of date; it has been destroyed by the progress of knowledge.”](https://sms4smile.com/quotes/bertrand-russell/the-ideal-of-an-all-round-education-is-out-of-date-it-has-been/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/4fd/bertrand-russell-69_education_the-ideal-of-an-all-round-education-is-o_2053397.jpg)

> [Some kind of philosophy is a necessity to all but the most thoughtless, and in the absence of knowledge it is almost…](https://sms4smile.com/quotes/bertrand-russell/some-kind-of-philosophy-is-a-necessity-to-all-but-the-most/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/19f/bertrand-russell-69_knowledge_some-kind-of-philosophy-is-a-necessity-t_2888571.jpg)

> [All knowledge, we feel, must be built up upon our instinctive beliefs; and if these are rejected, nothing is left.](https://sms4smile.com/quotes/bertrand-russell/all-knowledge-we-feel-must-be-built-up-upon-our-instinctive-beliefs/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/1bf/bertrand-russell-69_belief_all-knowledge-we-feel-must-be-built-up-u_714911.jpg)

> [The pursuit of knowledge is, I think, mainly actuated by love of power. And so are all advances in scientific technique.](https://sms4smile.com/quotes/bertrand-russell/the-pursuit-of-knowledge-is-i-think-mainly-actuated-by-love-of-power/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/c81/bertrand-russell-69_knowledge_the-pursuit-of-knowledge-is-i-think-main_1457355.jpg)

> [“The world needs wisdom as it has never needed it before; and if knowledge continues to increase, the world will need wisdom…](https://sms4smile.com/quotes/bertrand-russell/the-world-needs-wisdom-as-it-has-never-needed-it-before-and-if/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/205/bertrand-russell-69_knowledge_the-world-needs-wisdom-as-it-has-never-n_1087500.jpg)

> [“at first sight it might be thought that knowledge might be defined as belief which is in agreement with the facts. The…](https://sms4smile.com/quotes/bertrand-russell/at-first-sight-it-might-be-thought-that-knowledge-might-be-defined-as/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/907/bertrand-russell-69_faith_at-first-sight-it-might-be-thought-that_2626715.jpg)

> [Pure mathematics consists entirely of assertions to the effect that, if such and such a proposition is true of anything, then suchand…](https://sms4smile.com/quotes/bertrand-russell/pure-mathematics-consists-entirely-of-assertions-to-the-effect-that-2/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/f44/bertrand-russell-69_assertion_pure-mathematics-consists-entirely-of-as_3027277.jpg)

> [A good world needs knowledge, kindliness, and courage; it does not need a regretful hankering after the past or a fettering of…](https://sms4smile.com/quotes/bertrand-russell/a-good-world-needs-knowledge-kindliness-and-courage-it-does-not-need/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/579/bertrand-russell-69_atheist_a-good-world-needs-knowledge-kindliness_143606.jpg)

> [Philosophy is that part of science which at present people chose to have opinions about, but which they have no knowledge about.…](https://sms4smile.com/quotes/bertrand-russell/philosophy-is-that-part-of-science-which-at-present-people-chose-to/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/706/bertrand-russell-69_accounts_philosophy-is-that-part-of-science-which_2815227.jpg)

> [“In various ways, methods of approaching the mathematician's ideal were sought, and the resulting suggestions were the source of much that was…](https://sms4smile.com/quotes/bertrand-russell/in-various-ways-methods-of-approaching-the-mathematician-s-ideal-were/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/0b7/bertrand-russell-69_knowledge_in-various-ways-methods-of-approaching-t_1516501.jpg)

> [The main things which seem to me important on their own account, and not merely as means to other things, are knowledge,…](https://sms4smile.com/quotes/bertrand-russell/the-main-things-which-seem-to-me-important-on-their-own-account-and/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/4fe/bertrand-russell-69_accounts_the-main-things-which-seem-to-me-importa_1941116.jpg)

> [I conclude that, while it is true that science cannot decide questions of value, that is because they cannot be intellectually decided…](https://sms4smile.com/quotes/bertrand-russell/i-conclude-that-while-it-is-true-that-science-cannot-decide-questions/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/d98/bertrand-russell-69_decided_i-conclude-that-while-it-is-true-that-sc_2523913.jpg)

> [... mathematical knowledge ... is, in fact, merely verbal knowledge. "3" means "2+1", and "4" means "3+1". Hence it follows (though the…](https://sms4smile.com/quotes/bertrand-russell/mathematical-knowledge-is-in-fact-merely-verbal-knowledge-3-means-2-1/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/7c7/bertrand-russell-69_cease_mathematical-knowledge-is-in-fact-merely_1338712.jpg)

> [Philosophy arises from an unusually obstinate attempt to arrive at real knowledge. What passes for knowledge in ordinary life suffers from three…](https://sms4smile.com/quotes/bertrand-russell/philosophy-arises-from-an-unusually-obstinate-attempt-to-arrive-at/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/122/bertrand-russell-69_arise_philosophy-arises-from-an-unusually-obst_2429298.jpg)

> [Philosophy, though unable to tell us with certainty what is the true answer to the doubts which it raises, is able to…](https://sms4smile.com/quotes/bertrand-russell/philosophy-though-unable-to-tell-us-with-certainty-what-is-the-true/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/8a2/bertrand-russell-69_able_philosophy-though-unable-to-tell-us-with_1505090.jpg)

> [Gradually, ... the aspect of science as knowledge is being thrust into the background by the aspect of science as the power…](https://sms4smile.com/quotes/bertrand-russell/gradually-the-aspect-of-science-as-knowledge-is-being-thrust-into-the/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/133/bertrand-russell-69_accounts_gradually-the-aspect-of-science-as-knowl_140076.jpg)

> [While the dogmatist is harmful, the sceptic is useless ...; one is certain of knowing, the other of not knowing. What philosophy…](https://sms4smile.com/quotes/bertrand-russell/while-the-dogmatist-is-harmful-the-sceptic-is-useless-one-is-certain/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/bd9/bertrand-russell-69_affair_while-the-dogmatist-is-harmful-the-scept_1581084.jpg)

> [ The significance of a fact is relative to \[the general body of scientific\] knowledge. To say that a fact is significant in… ](https://sms4smile.com/quotes/bertrand-russell/the-significance-of-a-fact-is-relative-to-the-general-body-of/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/57c/bertrand-russell-69_art_the-significance-of-a-fact-is-relative-t_3087077.jpg)

> [“There is a widespread philosophical tendency towards the view which tells us that Man is the measure of all things, that truth…](https://sms4smile.com/quotes/bertrand-russell/there-is-a-widespread-philosophical-tendency-towards-the-view-which/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/8ec/bertrand-russell-69_knowledge_there-is-a-widespread-philosophical-tend_1568474.jpg)

> [Science is what we know, and philosophy is what we don't know.](https://sms4smile.com/quotes/bertrand-russell/science-is-what-we-know-and-philosophy-is-what-we-don-t-know/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/b4f/bertrand-russell-69_accounts_science-is-what-we-know-and-philosophy-i_2346548.jpg)

> [“Knowledge, as opposed to fantasies of wish fulfilment, is difficult to come by.”](https://sms4smile.com/quotes/bertrand-russell/knowledge-as-opposed-to-fantasies-of-wish-fulfilment-is-difficult-to/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/e86/bertrand-russell-69_difficult_knowledge-as-opposed-to-fantasies-of-wis_376775.jpg)

> [The degree of one's emotions varies inversely with one's knowledge of the facts.](https://sms4smile.com/quotes/bertrand-russell/the-degree-of-one-s-emotions-varies-inversely-with-one-s-knowledge-of/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/ea7/bertrand-russell-69_emotions_the-degree-of-one-s-emotions-varies-inve_2647811.jpg)

> [The good life is inspired by love and guided by knowledge.](https://sms4smile.com/quotes/bertrand-russell/the-good-life-is-inspired-by-love-and-guided-by-knowledge/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/a3f/bertrand-russell-69_good-life_the-good-life-is-inspired-by-love-and-gu_1030612.jpg)

> [What men really want is not knowledge but certainty.](https://sms4smile.com/quotes/bertrand-russell/what-men-really-want-is-not-knowledge-but-certainty/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/52b/bertrand-russell-69_certainty_what-men-really-want-is-not-knowledge-bu_2882397.jpg)

> [The scientific attitude of mind involves a sweeping away of all other desires in the interest of the desire to know.](https://sms4smile.com/quotes/bertrand-russell/the-scientific-attitude-of-mind-involves-a-sweeping-away-of-all-other-2/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/5a2/bertrand-russell-69_attitude_the-scientific-attitude-of-mind-involves_2524904.jpg)

> [“The good life is one inspired by love and guided by knowledge. Neither love without knowledge nor knowledge without love can produce…](https://sms4smile.com/quotes/bertrand-russell/the-good-life-is-one-inspired-by-love-and-guided-by-knowledge-neither/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/856/bertrand-russell-69_good-life_the-good-life-is-one-inspired-by-love-an_53394.jpg)

> [“I think the essence of wisdom is emancipation, as far as possible, from the tyranny of the here and now.”](https://sms4smile.com/quotes/bertrand-russell/i-think-the-essence-of-wisdom-is-emancipation-as-far-as-possible-from/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/164/bertrand-russell-69_emancipation_i-think-the-essence-of-wisdom-is-emancip_586981.jpg)

> [Awareness of universals is called conceiving, and a universal of which we are aware is called a concept.](https://sms4smile.com/quotes/bertrand-russell/awareness-of-universals-is-called-conceiving-and-a-universal-of-which/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/ee5/bertrand-russell-69_awareness_awareness-of-universals-is-called-concei_2208669.jpg)

> [We know very little, and yet it is astonishing that we know so much, and still more astonishing that so little knowledge…](https://sms4smile.com/quotes/bertrand-russell/we-know-very-little-and-yet-it-is-astonishing-that-we-know-so-much/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

[Image](https://sms4smile.com/quotes/i/019/bertrand-russell-69_engineering_we-know-very-little-and-yet-it-is-astoni_272095.jpg)

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## More by Bertrand Russell

> [ If the State does not acquire supremacy over \[vast private\] enterprises, it becomes their puppet, and they become the real State. ](https://sms4smile.com/quotes/bertrand-russell/if-the-state-does-not-acquire-supremacy-over-vast-private-enterprises/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [That the world is in a bad shape is undeniable, but there is not the faintest reason in history to suppose that Christianity offers…](https://sms4smile.com/quotes/bertrand-russell/that-the-world-is-in-a-bad-shape-is-undeniable-but-there-is-not-the/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [All movements go too far.](https://sms4smile.com/quotes/bertrand-russell/all-movements-go-too-far/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [Those who advocate common usage in philosophy sometimes speak in a manner that suggests the mystique of the 'common man.'](https://sms4smile.com/quotes/bertrand-russell/those-who-advocate-common-usage-in-philosophy-sometimes-speak-in-a/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [“Such, in outline, but even more purposeless, more void of meaning, is the world which Science presents for our belief. Amid such a world,…](https://sms4smile.com/quotes/bertrand-russell/such-in-outline-but-even-more-purposeless-more-void-of-meaning-is-the/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [Dr. Arnold . . . the admired reformer of public schools, came across some cranks who thought it a mistake to flog boys. Anyone…](https://sms4smile.com/quotes/bertrand-russell/dr-arnold-the-admired-reformer-of-public-schools-came-across-some/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [Of all evils of war the greatest is the purely spiritual evil: the hatred, the injustice, the repudiation of truth, the artificial conflict.](https://sms4smile.com/quotes/bertrand-russell/of-all-evils-of-war-the-greatest-is-the-purely-spiritual-evil-the/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [Aristotle maintained that women have fewer teeth than men; although he was twice married, it never occurred to him to verify this statement by…](https://sms4smile.com/quotes/bertrand-russell/aristotle-maintained-that-women-have-fewer-teeth-than-men-although-he/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [If an opinion contrary to your own makes you angry, that is a sign that you are subconsciously aware of having no good reason…](https://sms4smile.com/quotes/bertrand-russell/if-an-opinion-contrary-to-your-own-makes-you-angry-that-is-a-sign/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [I cannot escape from the conclusion that the great ages of progress have depended upon a small number of individuals of transcendent ability.](https://sms4smile.com/quotes/bertrand-russell/i-cannot-escape-from-the-conclusion-that-the-great-ages-of-progress/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [I think it would be just to say the most essential characteristic of mind is memory, using this word in its broadest sense to…](https://sms4smile.com/quotes/bertrand-russell/i-think-it-would-be-just-to-say-the-most-essential-characteristic-of/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [The newspapers at one time said that I was dead but after carefully examining the evidence I came to the conclusion that this statement…](https://sms4smile.com/quotes/bertrand-russell/the-newspapers-at-one-time-said-that-i-was-dead-but-after-carefully/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [“Persecution is used in theology, not in arithmetic, because in arithmetic there is knowledge, but in theology there is only opinion.”](https://sms4smile.com/quotes/bertrand-russell/persecution-is-used-in-theology-not-in-arithmetic-because-in/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [“Many orthodox people speak as though it were the business of sceptics to disprove received dogmas rather than of dogmatists to prove them. This…](https://sms4smile.com/quotes/bertrand-russell/many-orthodox-people-speak-as-though-it-were-the-business-of-sceptics/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

> [There is no greater reason for children to honour parents than for parents to honour children except, that while the children are young, the…](https://sms4smile.com/quotes/bertrand-russell/there-is-no-greater-reason-for-children-to-honour-parents-than-for/)

[Bertrand Russell](https://sms4smile.com/quotes/author/bertrand-russell/)

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                        "text": "“The world needs wisdom as it has never needed it before; and if knowledge continues to increase, the world will need wisdom in the future even more than it does now.”",
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                        "text": "“at first sight it might be thought that knowledge might be defined as belief which is in agreement with the facts. The trouble is that no one knows what a belief is, no one knows what a fact is, and no one knows what sort of agreement between them would make a belief true.”",
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                        "text": "Pure mathematics consists entirely of assertions to the effect that, if such and such a proposition is true of anything, then suchand such another proposition is true of that thing… Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true.",
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                        "text": "Philosophy is that part of science which at present people chose to have opinions about, but which they have no knowledge about. Therefore every advance in knowledge robs philosophy of some problems which formerly it had ...and will belong to science.",
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                        "text": "“In various ways, methods of approaching the mathematician's ideal were sought, and the resulting suggestions were the source of much that was mistaken in metaphysics and theory of knowledge.”",
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                        "text": "The main things which seem to me important on their own account, and not merely as means to other things, are knowledge, art, instinctive happiness, and relations of friendship or affection.",
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                        "text": "I conclude that, while it is true that science cannot decide questions of value, that is because they cannot be intellectually decided at all, and lie outside the realm of truth and falsehood. Whatever knowledge is attainable, must be attained by scientific methods; and what science cannot discover, mankind cannot know.",
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                        "text": "... mathematical knowledge ... is, in fact, merely verbal knowledge. \"3\" means \"2+1\", and \"4\" means \"3+1\". Hence it follows (though the proof is long) that \"4\" means the same as \"2+2\". Thus mathematical knowledge ceases to be mysterious.",
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                        "text": "Philosophy arises from an unusually obstinate attempt to arrive at real knowledge. What passes for knowledge in ordinary life suffers from three defects: it is cocksure, vague and self-contradictory. The first step towards philosophy consists in becoming aware of these defects, not in order to rest content with a lazy scepticism, but in order to substitute an amended kind of knowledge which shall be tentative, precise and self-consistent.",
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                        "text": "Philosophy, though unable to tell us with certainty what is the true answer to the doubts which it raises, is able to suggest many possiblities which enlarge our thoughts and free them from the tyranny of custom. Thus, while diminishing our feeling of certainty as to what things are, it greatly increases our knowledge as to what the may be; it removes the somewhat arrogant dogmatism of those who have never travelled into the region of liberating doubt, and it keeps alive our sense of wonder by showing familar things in an unfamilar aspect",
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                        "text": "Gradually, ... the aspect of science as knowledge is being thrust into the background by the aspect of science as the power of manipulating nature. It is because science gives us the power of manipulating nature that it has more social importance than art. Science as the pursuit of truth is the equal, but not the superior, of art. Science as a technique, though it may have little intrinsic value, has a practical importance to which art cannot aspire.",
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                        "text": "While the dogmatist is harmful, the sceptic is useless ...; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or of ignorance. Knowledge is not so precise a concept as is commonly thought. Instead of saying 'I know this', we ought to say 'I more or less know something more or less like this'. ... Knowledge in practical affairs has not the certainty or the precision of arithmetic.",
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                        "text": "The significance of a fact is relative to [the general body of scientific] knowledge. To say that a fact is significant in science, is to say that it helps to establish or refute some general law; for science, though it starts from observation of the particular, is not concerned essentially with the particular, but with the general. A fact, in science, is not a mere fact, but an instance. In this the scientist differs from the artist, who, if he deigns to notice facts at all, is likely to notice them in all their particularity.",
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                        "text": "“There is a widespread philosophical tendency towards the view which tells us that Man is the measure of all things, that truth is man-made, that space and time and the world of universals are properties of the mind, and that, if there be anything not created by the mind, it is unknowable and of no account for us. This view, if our previous discussions were correct, is untrue; but in addition to being untrue, it has the effect of robbing philosophic contemplation of all that gives it value, since it fetters contemplation to Self. What it calls knowledge is not a union with the not-Self, but a set of prejudices, habits, and desires, making an impenetrable veil between us and the world beyond. The man who finds pleasure in such a theory of knowledge is like a man who never leaves the domestic circle for fear his word might not be law.”",
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