Nothing causes more consternation in a group of hypocrits than one honest man.

Don't let your brain interfere with your heart.

Nothing happens until something moves.

Considered logically this concept is not identical with the totality of sense impressions referred to; but it is an arbitrary creation of the human (or animal) mind.

When you won't be able to describe it simply just, you don't are aware of it well sufficient.

Science can only ascertain what is, but not what should be, and outside of its domain value judgements of all kinds remain necessary.

The most important decision we make is whether we believe we live in a friendly or hostile universe.