--- title: "Meaning & Key Takeaway of: We must reason in natural philosophy not…" description: "\"We must reason in natural philosophy not from what we hope, or even expect, but from what we perceive.\" — Humphry Davy" image: "https://sms4smile.com/quotes/i/5d0/humphry-davy-13342_natural_we-must-reason-in-natural-philosophy-not_858459.jpg" --- # We must reason in natural philosophy not from what we… ![“We must reason in natural philosophy not from what we hope, or even expect, but from what we perceive.” quote by Humphry Davy](https://sms4smile.com/quotes/i/5d0/humphry-davy-13342_natural_we-must-reason-in-natural-philosophy-not_858459.jpg) [Download](https://sms4smile.com/quotes/i/5d0/humphry-davy-13342_natural_we-must-reason-in-natural-philosophy-not_858459.jpg) [Open image](https://sms4smile.com/quotes/i/5d0/humphry-davy-13342_natural_we-must-reason-in-natural-philosophy-not_858459.jpg) > “We must reason in natural philosophy not from what we hope, or even expect, but from what we perceive.” [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Reason should be based on observable facts, not hopes or expectations, emphasizing empirical evidence over speculation. **In simple terms:** Base reasoning on what you can see, not what you wish. Key Takeaway Prioritize observation in decision‑making. Themes science critical thinking empiricism Mood analytical inquisitive Type philosophical inspirational When to use this quote - research design - policy analysis - education - daily problem solving Key Concepts philosophy of science methodology skepticism Questions to Reflect On - How do you differentiate hope from evidence? - What role does intuition play in scientific work? A Different Perspective Hope can motivate inquiry, but may bias interpretation of data. ★ ★ ★ ★ ★ No ratings yet [Expect Perceive](https://sms4smile.com/quotes/about/expect-perceive-825645/) [Natural](https://sms4smile.com/quotes/about/natural/) [Natural philosophy](https://sms4smile.com/quotes/about/natural-philosophy/) [Perceive](https://sms4smile.com/quotes/about/perceive/) [Philosophy](https://sms4smile.com/quotes/about/philosophy/) [Philosophy Hope](https://sms4smile.com/quotes/about/philosophy-hope-825646/) [Reason](https://sms4smile.com/quotes/about/reason/) [Reason Natural](https://sms4smile.com/quotes/about/reason-natural-825644/) ## Related quotes > [As a rule we perceive what we expect to perceive... 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It requires no experience or complicated apparatus, no minute…](https://sms4smile.com/quotes/humphry-davy/geology-perhaps-more-than-any-other-department-of-natural-philosophy/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [“It is for this reason that there is no “natural way of life” for humans. There are only cultural choices.”](https://sms4smile.com/quotes/fastreads/it-is-for-this-reason-that-there-is-no-natural-way-of-life-for-humans/) [FastReads](https://sms4smile.com/quotes/author/fastreads/) > [Reason is natural revelation, whereby the eternal father of light, and fountain of all knowledge, communicates to mankind that portion of truth which he…](https://sms4smile.com/quotes/john-locke/reason-is-natural-revelation-whereby-the-eternal-father-of-light-and/) [John Locke](https://sms4smile.com/quotes/author/john-locke/) > [With children use force; with men reason; such is the natural order of things. 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That would, indeed be a civil war of…](https://sms4smile.com/quotes/humphry-davy/but-if-the-two-countries-or-governments-are-at-war-the-men-of-science/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [This sentiment of self-contempt is a frequent one in young people of both sexes. 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The necessity or desire of…](https://sms4smile.com/quotes/humphry-davy/the-beginning-of-civilisation-is-the-discovery-of-some-useful-arts-by/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [Natural science is founded on minute critical views of the general order of events taking place upon our globe, corrected, enlarged, or exalted by…](https://sms4smile.com/quotes/humphry-davy/natural-science-is-founded-on-minute-critical-views-of-the-general/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [The three states of the caterpillar, larva, and butterfly have, since the time of the Greek poets, been applied to typify the human being,--its…](https://sms4smile.com/quotes/humphry-davy/the-three-states-of-the-caterpillar-larva-and-butterfly-have-since/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [James Watt was equally distinguished as a natural philosopher and chemist; his inventions demonstrate his profound knowledge of those sciences, and that peculiar characteristic…](https://sms4smile.com/quotes/humphry-davy/james-watt-was-equally-distinguished-as-a-natural-philosopher-and/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [The most important of my discoveries have been suggested to me by my failures.](https://sms4smile.com/quotes/humphry-davy/the-most-important-of-my-discoveries-have-been-suggested-to-me-by-my/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [Mr. Dalton's permanent reputation will rest upon his having discovered a simple principle, universally applicable to the facts of chemistry - in fixing the…](https://sms4smile.com/quotes/humphry-davy/mr-dalton-s-permanent-reputation-will-rest-upon-his-having-discovered/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [Oh, most magnificent and noble Nature! Have I not worshipped thee with such a love As never mortal man before displayed? Adored thee in…](https://sms4smile.com/quotes/humphry-davy/oh-most-magnificent-and-noble-nature-have-i-not-worshipped-thee-with/) [Humphry Davy](https://sms4smile.com/quotes/author/humphry-davy/) > [“The moment after, I began to respire 20 quarts of unmingled nitrous oxide. 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Yet rerunning…](https://sms4smile.com/quotes/tara-brach/it-is-natural-that-our-minds-replay-old-stories-because-that-is-our/) [Tara Brach](https://sms4smile.com/quotes/author/tara-brach/) > [We need to discover all over again that worship is natural to the Christian, as it was to the godly Israelites who wrote the…](https://sms4smile.com/quotes/j-i-packer/we-need-to-discover-all-over-again-that-worship-is-natural-to-the/) [J. I. Packer](https://sms4smile.com/quotes/author/j-i-packer/) > [... informed ignorance provides the natural state of mind for research scientists at the ever-shifting frontiers of knowledge. 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