If there is a bedrock principle underlying the First Amendment, it is that the government may not prohibit the expression of an idea simply because society finds the idea itself offensive or disagreeable.

We current Justices read the Constitution in the only way that we can: as Twentieth Century Americans. We look to the history of the time of framing and to the intervening history of interpretation. But the ultimate question must be, what do the words of the text mean in our time. For the genius of the Constitution rests not in any static meaning it might have had in a world that is dead and gone, but in the adaptability of its great principles to cope with current problems and current needs.

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.

There is no such thing as a false idea.

We must meet the challenge rather than wish it were not before us.

Lawyers, before any other group, must continue to point out how the system is really working-how it actually affects real people. They must constantly demonstrate to courts and legislatures alike the tragic results of legal nonintervention. They must highlight how legal doctrines no longer bear any relation to reality, whether in landlord and tenant law, holder in due course law, or any other law. In sum, lawyers must bring real morality into the legal consciousness

The door of the Free Exercise Clause stands tightly closed against any government regulation of religious beliefs as such. Government may neither compel affirmation of a repugnant belief, nor penalize or discriminate against individuals or groups because they hold views abhorrent to the authorities.