Life's most persistent and urgent question is, 'What are you doing for others? Author: Martin Luther King Jr. Copy Quote More from Martin Luther King Jr. “I guess one of the great agonies of life is that we are constantly trying to fi…” “On some positions, Cowardice asks the question, “Is it safe?” Expediency asks t…” “A nation or civilization that continues to produce soft-minded men purchases it…” “A social movement that only moves people is merely a revolt. A movement that ch…”