303 Quotes by Isaac Newton

An object in motion tends to remain in motion along a straight line unless acted upon by an outside force.

Are not all Hypotheses erroneous, in which Light is supposed to consist in Pression or Motion, propagated through a fluid Medium? For in all these Hypotheses the Phaenomena of Light have been hitherto explain'd by supposing that they arise from new Modifications of the Rays; which is an erroneous Supposition.

Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.

The Prophecies of Daniel are all of them related to one another, as if they were but several parts of one general Prophecy, given at several times. The first is the easiest to be understood, and every following Prophecy adds something new to the former.

Is not Fire a Body heated so hot as to emit Light copiously? For what else is a red hot Iron than Fire? And what else is a burning Coal than red hot Wood?

The centre of the system of the world is immovable.

Our present work sets forth mathematical principles of philosophy. For the basic problem of philosophy seems to be to discover the forces of nature from the phenomena of motions and then to demonstrate the other phenomena from these forces. It is to these ends that the general propositions in books 1 and 2 are directed, while in book 3 our explanation of the system of the world illustrates these propositions.

If you are affronted it is better to pass it by in silence, or with a jest, though with some dishonor, than to endeavor revenge. If you can keep reason above passion, that and watchfulness will be your best defenders.

There are more sure marks of authenticity in the Bible that in any profane history.