"In the long run of history, the censor and the inquisitor have always lost. The only sure weapon against bad ideas is better ideas."

"Things have got to be wrong in order that they may be deplored."

"A Socrates in every classroom."

"It is a barren kind of criticism which tells you what a thing is not."

"The only sure weapon against bad ideas is better ideas."

"The divine spark leaps from the finger of God to the finger of Adam, whether it takes ultimate shape in a law of physics or a law of the land, a poem or a policy, a sonata or a mechanical computer."

"Books won't stay banned. They won't burn. Ideas won't go to jail."