Even a dog distinguishes between being stumbled over and being kicked. - Oliver Wendell Holmes

Pretty much all law consists in forbidding men to do something that they want to do.

I think that we should be eternally vigilant against attempts to check the expression of opinions that we loathe and believe to be fraught with death, unless they so imminently threaten immediate interference with the lawful and pressing purposes of the law that an immediate check is required to save the country.

Whatever disagreement there may be as to the scope of the phrase "due process of law" there can be no doubt that it embraces the fundamental conception of a fair trial, with opportunity to be heard.