It must always be remembered that what the Constitution forbids is not all searches and seizures, but unreasonable searches and seizures.
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 StewartEthics is knowing the difference between what you have a right to do and what is right to do.
Potter StewartI shall not today attempt further to define the kinds of material but I know it when I see it.
Potter Stewart