We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances. — Isaac Newton Copy Share Image
Impressed force is the action exerted on a body to change its state either of resting or of moving uniformly straight forward. — Isaac Newton Copy Share Image
The changing of Bodies into Light, and Light into Bodies, is very conformable to the Course of Nature, which seems delighted with… — Isaac Newton Copy Share Image
As in Mathematicks, so in Natural Philosophy, the Investigation of difficult Things by the Method of Analysis, ought ever to precede the… — Isaac Newton Copy Share Image
My Design in this Book is not to explain the Properties of Light by Hypotheses, but to propose and prove them by… — Isaac Newton Copy Share Image
The instinct of brutes and insects can be the effect of nothing else than the wisdom and skill of a powerful ever-living… — Isaac Newton Copy Share Image
I do not think that this [the universe] can be explained only by natural causes, and are forced to impute to the… — Isaac Newton Copy Share Image
This most beautiful system of the sun, planets and comets, could only proceed from the counsel and dominion of an intelligent and… — Isaac Newton Copy Share Image
Thus you may multiply each stone 4 times & no more for they will then become oyles shining in ye dark and… — Isaac Newton Copy Share Image
Against filling the Heavens with fluid Mediums, unless they be exceeding rare, a great Objection arises from the regular and very lasting… — Isaac Newton Copy Share Image
You ask me how, with so much study, I manage to retene my health. ... Morpheous is my last companion ; without… — Isaac Newton Copy Share Image
Qu. 31. Have not the small Particles of Bodies certain Powers, Virtues or Forces, by which they act at a distance, not… — Isaac Newton Copy Share Image
Do not great Bodies conserve their heat the longest, their parts heating one another, and may not great dense and fix'd Bodies,… — Isaac Newton Copy Share Image
Therefore, the causes assigned to natural effects of the same kind must be, so far as possible, the same. — Isaac Newton Copy Share Image
Thus far I have explained the phenomena of the heavens and of our sea by the force of gravity, but I have… — Isaac Newton Copy Share Image
It seems probable to me that God, in the beginning, formed matter in solid, massy, hard, impenetrable, moveable particles, of such sizes… — Isaac Newton Copy Share Image
“ Kepler 's laws, although not rigidly true, are sufficiently near to the truth to have led to the discovery of the… — Isaac Newton Copy Share Image
He rules all things, not as the world soul but as the lord of all. And because of his dominion he is… — Isaac Newton Copy Share Image
You ask me how, with so much study, I manage to retene my health. Morpheus is my last companion; without 8 or… — Isaac Newton Copy Share Image
I see I have made myself a slave to Philosophy, but if I get free of Mr. Linus's business I will resolutely… — Isaac Newton Copy Share Image
Is not Fire a Body heated so hot as to emit Light copiously? For what else is a red hot Iron than… — Isaac Newton Copy Share Image
Ax: 100 Every thing doth naturally persevere in yt state in wch it is unlesse it bee interrupted by some externall cause,… — Isaac Newton Copy Share Image
“If I have seen further it is by standing on the shoulders of Giants.” — Isaac Newton Copy Share Image
I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses; for… — Isaac Newton Copy Share Image
Are not all Hypotheses erroneous, in which Light is supposed to consist in Pression or Motion, propagated through a fluid Medium? For… — Isaac Newton Copy Share Image
The same law takes place in a system, consisting of many bodies, as in one single body, with regard to their persevering in their… — Isaac Newton Copy Share Image
I have been much amused at ye singular phenomena resulting from bringing of a needle into contact with a piece of amber or resin… — Isaac Newton Copy Share Image
I keep the subject of my inquiry constantly before me, and wait till the first dawning opens gradually, by little and little, into a… — Isaac Newton Copy Share Image
Philosophy is such an impertinently litigious lady that a man had as good be engaged in lawsuits as have to do with her. — Isaac Newton Copy Share Image
Do not Bodies act upon Light at a distance, and by their action bend its Rays; and is not this action (caeteris paribus) [all… — Isaac Newton Copy Share Image
God in the beginning formed matter in solid, massy, hard, impenetrable, movable particles, of such sizes and figures, and with such other properties, and… — Isaac Newton Copy Share Image
I am ashamed to tell you to how many figures I carried these calculations [of Pi], having no other business at the time — Isaac Newton Copy Share Image
Blind metaphysical necessity, which is certainly the same always and every where, could produce no variety of things. All that diversity of natural things… — Isaac Newton Copy Share Image
You sometimes speak of gravity as essential and inherent to matter. Pray do not ascribe that notion to me, for the cause of gravity… — Isaac Newton Copy Share Image
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