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

I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses; for whatever is not deduced from the phenomena is to be called a hypothesis, and hypotheses, whether metaphysical or physical, whether of occult qualities or mechanical, have no place in experimental philosophy.

I am ashamed to tell you to how many figures I carried these calculations [of Pi], having no other business at the time

Did blind chance know that there was light and what was its refraction, and fit the eyes of all creatures after the most curious manner to make use of it? These and other suchlike considerations, always have, and always will prevail with mankind, to believe that there is a Being who made all things, who has all things in his power, and who is therefore to be feared.

If I am anything, which I highly doubt, I have made myself so by hard work.

When the adversaries of Erasmus had got the Trinity into his edition, they threw by their manuscript as an old almanac out of date.

As a blind man has no idea of colors, so we have no idea of the manner by which the all-wise God perceives and understands all things.