It's easier to resist at the beginning than at the end.

Why does the eye see a thing more clearly in dreams than the imagination when awake?

Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.

No human investigation can be called real science if it cannot be demonstrated mathematically.

The eye, the window of the soul, is the chief means whereby the understanding can most fully and abundantly appreciate the infinite works of Nature; and the ear is second.

The boundaries of bodies are the least of all things.

People reveal themselves completely only when they are thrown out of the customary conditions of their life.