Appellant constituted a legitimate class of one, and this provides a basis for Congress's decision to proceed with dispatch with respect to his materials.

All ideas having even the slightest redeeming social importance - unorthodox ideas, controversial ideas, even ideas hateful to the prevailing climate of opinion, have the full protection of the guarantees [of the First Amendment].

If a policeman must know the Constitution, then why not a planner?

The concept of military necessity is seductively broad, and has a dangerous plasticity. Because they invariably have the visage of overriding importance, there is always a temptation to invoke security "necessities" to justify an encroachment upon civil liberties. For that reason, the military-security argument must be approached with a healthy skepticism.

Sex, a great and mysterious motive force in human life, has indisputably been a subject of absorbing interest to mankind through the ages.

If our free society is to endure, and I know it will, those who govern must recognize that the Framers of the Constitution limited their power in order to preserve human dignity and the air of freedom which is our proudest heritage.

It is difficult to understand precisely what the state hopes to achieve by promoting the creation and perpetuation of a subclass of illiterates within our boundaries, surely adding to the problems and costs of unemployment, welfare and crime.