A man has got to keep his extrication.The important thing is not to get bogged downIn what he has to do to earn a living.

Loyalty to petrified opinion never yet broke a chain or freed a human soul.

It is a bad thing to perform menial duties even for the sake of freedom; to fight with pinpricks, instead of with clubs. I have become tired of hypocrisy, stupidity, gross arbitrariness, and of our bowing and scraping, dodging, and hair-splitting over words. Consequently, the government has given me back my freedom.

Science and democracy are the right and left hands of what I'll refer to as the move from the realm of necessity to the realm of freedom.

Necessity is blind until it becomes conscious. Freedom is the consciousness of necessity.

A nation that enslaves another forges its own chains.