"We must never cease to proclaim in fearless tones the great principles of freedom and the rights of man which are the joint inheritance of the English-speaking world and which through Magna Carta, the Bill of Rights, the Habeas Corpus, trial by jury, and the English common law find their most famous expression in the American Declaration of Independence."

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The Constitution and the Bill of Rights we designed to get the government off the backs of the people -- all the people. Those great documents guarantee to us all the rights to personal and spiritual self-fulfillment. But that guarantee is not self-executing. As nightfall does not come all at once, neither does oppression. In both instances, there is a twilight when everything remains seemingly unchanged. And it is in such a twilight that we all must be most aware of the change in the air -- however slight -- lest we become unwitting victims of the darkness.

— William O. Douglas