A man may imagine things that are false, but he can only understand things that are true, for if the things be false, the apprehension of them is not understanding.

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

The best way to understanding is a few good examples.

I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.

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

A man may imagine things that are false, but he can only understand things that are true, for if the things be false, the apprehension of them is not understanding.

Whence arises all that order and beauty we see in the world?