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

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.

We are not final because we are infallible, but infallible only because we are final.

Education should be a lifelong process, the formal period serving as a foundation on which life's structure may rest and rise.

We can have intellectual individualism and the rich cultural diversities that we owe to exceptional minds only at the price of occasional eccentricity and abnormal attitudes. When they are so harmless to others or to the State as those we deal with here, the prices is not too great. But freedom to differ is not limited to things that do not matter much. That would be a mere shadow of freedom. The test of its substance is the right to differ as to things that touch the heart of the existing order.

There is no such thing as an achieved liberty: like electricity, there can be no substantial storage and it must be generated as it is enjoyed, or the lights go out.

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.