It is only the present danger of immediate evil or an intent to bring it about that warrants Congress in setting a limit to the expression of opinion… - Oliver Wendell Holmes

To allow opposition by speech seems to indicate that you think the speech impotent, as when a man says that he has squared the circle, or that you do not care whole-heartedly for the result, or that you doubt either your power or your premises. But when men have realized that time has upset many fighting faiths, they may come to believe even more than they believe the very foundations of their own conduct that the ultimate good desired is better reached by free trade in ideas —that the best test of truth is the power of the thought to get itself accepted in the competition of the market, and that truth is the only ground upon which their wishes safely can be carried out. That at any rate is the theory of our Constitution.

[I]t might seem that the law of life is . . . that man should produce food and raiment in order that he might produce yet other food and other raiment to the end of time. Yet who does not rebel at that conclusion?

Life is a roar of bargain and battle, but in the very heart of it there rises a mystic spiritual tone that gives meaning to the whole. It transmutes the dull details into romance. It reminds us that our only but wholly adequate significance is as parts of the unimaginable whole. It suggests that even while living we are living to ends outside ourselves