Pictures, propagated by motion along the fibers of the optic nerves in the brain, are the cause of vision.

OUR ORDINATION: Sir Isaac Newton, 1642 – 1747 About the times of the End, a body of men will be raised up who will turn their attention to the prophecies, and insist upon their literal interpretation, in the midst of much clamor and opposition.

Absolute, true and mathematical time, of itself, and from its own nature flows equably without relation to anything external.

Trials are medicines which our gracious and wise Physician prescribes because we need them; and he proportions the frequency and weight of them to what the case requires. Let us trust his skill and thank him for his prescription.

I have presented principles of philosophy that are not, however, philosophical but strictly mathematical-that is, those on which the study of philosophy can be based. These principles are the laws and conditions of motions and of forces, which especially relate to philosophy.

Every particle of matter is attracted by or gravitates to every other particle of matter with a force inversely proportional to the squares of their distances.

I can see so far because I stood on the shoulders of giants.