Without denying the value of scientific endeavor, there is a striking absurdity in committing billions to reach the moon where no people live, while only a fraction of that amount is appropriated to service the densely populated slums. – Martin Luther King,Jr., Where Do We Go from Here: Chaos or Community?, 1967

Dare to do things worthy of imprisonment if you mean to be of consequence. – Juvenal

There may have been a time when war served as a negative good by preventing the spread and growth of an evil force, but the destructive power of modern weapons eliminates even the possibility that war may serve as a negative good. – Martin Luther King,Jr., Strength to Love, 1963

If a man is called a streetsweeper, he should sweep streets even as Michelangelo painted, or Beethoven composed music, or Shakespeare wrote poetry. He should sweep streets so well that all the hosts of heaven and Earth will pause to say, Here lived a great streetsweeper who did his job well. – Martin Luther King,Jr.