We can afford no liberties with liberty itself.

In our country are evangelists and zealots of many different political, economic and religious persuasions whose fanatical conviction is that all thought is divinely classified into two kinds - that which is their own and that which is false and dangerous.

I cannot say that our country could have no secret police without becoming totalitarian, but I can say with great conviction that it cannot become totalitarian without a centralized national police.

The priceless heritage of our society is the unrestricted constitutional right of each member to think as he will. Thought control is a copyright of totalitarianism, and we have no claim to it.

Intellectual freedom means the right to re-examine much that has been long taken for granted. A free man must be a reasoning man, and he must dare doubt what a legislative or electoral majority may most passionately assert.

In this court the parties changed positions as nimbly as if dancing a quadrille.

The price of freedom of religion or of speech or of the press is that we must put up with, and even pay for, a good deal of rubbish.