He that in ye mine of knowledge deepest diggeth, hath, like every other miner, ye least breathing time, and must sometimes at least come to terr. alt. for air.

An object that is at rest will tend to stay at rest. An object that is in motion will tend to stay in motion.

To arrive at the simplest truth requires years of contemplation.

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

I do not feign hypotheses.

Therefore, the causes assigned to natural effects of the same kind must be, so far as possible, the same.

Plato is my friend, Aristotle is my friend, but my greatest friend is truth.