But if our democracy is to flourish it must have criticism, if our government is to function it must have dissent. Only totalitarian governments insist upon conformity and they — as we know — do so at their peril. Without criticism abuses will go unrebuked; without dissent our dynamic system will become static. The American people have a stake in the maintenance of the most thorough-going inquisition into American institutions. They have a stake in nonconformity, for they know that the American genius is nonconformist.

Henry Steele Commager (1902-1998) American historian, writer, activist

Essay (1947-09), “Who Is Loyal to America?” sec. 3, Harper’s Magazine, Vol. 195, No. 1168
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Reprinted in Freedom, Loyalty, Dissent (1954).