I shall not today attempt further to define the kinds of material but I know it when I see it.
Potter StewartI shall not attempt further to define the kinds of material I understand to be embraced within that shorthand description (of pornography), and perhaps I could never succeed in intelligibly doing so. But I know it when I see it, and the motion picture involved in this case is not that.
Potter StewartEthics is knowing the difference between what you have a right to do and what is right to do.
Potter StewartThe First Amendment guarantees liberty of human expression in order to preserve in our Nation what Mr. Justice Holmes called a "free trade in ideas." To that end, the Constitution protects more than just a man's freedom to say or write or publish what he wants. It secures as well the liberty of each man to decide for himself what he will read and to what he will listen. The Constitution guarantees, in short, a society of free choice.
Potter StewartFor the Fourth Amendment protects people, not places. What a person knowingly exposes to the public, even in his own home or office, is not a subject of Fourth Amendment protection. But what he seeks to preserve as private, even in an area accessible to the public, may be constitutionally protected.
Potter Stewart