A time comes when silence is betrayal. Even when pressed by the demands of inner truth, men do not easily assume the task of opposing their government's policy, especially in time of war. Nor does the human spirit move without great difficulty against all the apathy of conformist thought, within one's own bosom and in the surrounding world.

The Essential Martin Luther King, Jr.: "I Have a Dream" and Other Great Writings (ed. Beacon Press, 2013) - ISBN: 9780807033043