Any court which undertakes by its legal processes to enforce civil liberties needs the support of an enlightened and vigorous public opinion which will be intelligent and discriminating as to what cases really are civil liberties cases and what questions really are involved in those cases.

While the Nation has forbidden monopoly by one set of laws it has been creating them by another. Patent laws, valuable as they may be in some respects, often father monopoly.

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 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.

The day that this country ceases to be free for irreligion it will cease to be free for religion - except for the sect that can win political power.

The privilege of opening the first trial in history for crimes against the peace of the world imposes a grave responsibility. The wrongs, which we seek to condemn and punish, have been so calculated, so malignant, and so devastating, that civilization cannot tolerate their being ignored, because it cannot survive their being repeated. That four great nations, flushed with victory and stung with injury, stay the hand of vengeance and voluntarily submit their captive enemies to the judgment of the law is one of the most significant tributes that power has ever paid to reason.

Particularly when the war power is invoked to do things to the liberties of people, or to their property or economy that only indirectly affect conduct of the war and do not relate to the engagement of the war itself, the constitutional basis should be scrutinized with care. ... I would not be willing to hold that war powers may be indefinitely prolonged merely by keeping legally alive a state of war that had in fact ended. I cannot accept the argument that war powers last as long as the effects and consequences of war for if so they are permanent -- as permanent as the war debts.