Respectfully Quoted: A Dictionary of Quotations. 1989.
Harry Weinberger (18881944)
The greatest right in the world is the right to be wrong. If the Government or majorities think an individual is right, no one will interfere with him; but when agitators talk against the things considered holy, or when radicals criticise, or satirize the political gods, or question the justice of our laws and institutions, or pacifists talk against war, how the old inquisition awakens, and ostracism, the excommunication of the church, the prison, the wheel, the torture-chamber, the mob, are called to suppress the free expression of thought.
HARRY WEINBERGER, The First Casualties in War, letter to the editor, The Evening Post, New York City, April 10, 1917, p. 11.