The concept of the public welfare is broad and inclusive ... the values it represents are spiritual as well as physical, aesthetic as well as monetary. It is within the power of the legislature to determine that the community should be beautiful as well as healthy, spacious as well as clean, well balanced as well as carefully patroled.

The Second Amendment reveals a profound principle of American government - the principle of civilian ascendency over the military.

The most important aspect of freedom of speech is freedom to learn. All education is a continuous dialogue - questions and answers that pursue every problem on the horizon. That is the essence of academic freedom.

The way to combat noxious ideas is with other ideas. The way to combat falsehoods is with truth.

One who comes to the Court must come to adore, not to protest. That's the new gloss on the First Amendment.

What we must remember, however, is that preservation of liberties does not depend on motives. A suppression of liberty has the same effect whether the suppressor be a reformer or an outlaw. The only protection against misguided zeal is constant alertness to infractions of the guarantees of liberty contained in our Constitution. Each surrender of liberty to the demands of the moment makes easier another, larger surrender. . .

The great and invigorating influences in American life have been the unorthodox: the people who challenge an existing institution or way of life, or say and do things that make people think.