“Lightning makes no sound until it strikes.”

“The conservatives who say, "Let us not move so fast," and the extremists who say, "Let us go out and whip the world ," would tell you that they are as far apart as the poles. But there is a striking parallel: They accomplish nothing; for they do not reach the people who have a crying need to be free.”

“Until justice rolls down like water and righteousness like a mighty stream.”

“No one really knows why they are alive until they know what they'd die for.”

“For you will never be what you ought to be until they [your fellow humans] are what they ought to be.”

“Oh, the worst of all tragedies is not to die young, but to live until I am seventy-five and yet not ever truly to have lived.”

“An individual has not started living until he can rise above the narrow confines of his individualistic concerns to the broader concerns of all humanity.”