It is from the numberless diverse acts of courage and belief that human history is shaped. Each time a man (or a woman) stands up for an ideal, or acts to improve the lot of others, or strikes out against injustice, he (or she) sends a tiny ripple of hope, and crossing each other from a million different centers of energy and daring, those ripples build a current which can sweep down the mightiest walls of oppression and resistance.

Robert Francis Kennedy (1925-1968) American politician
“Day of Affirmation,” address, University of Capetown, South Africa (6 Jun 1966)
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Inscribed on the RFK gravesite at Arlington National Cemetery as "It is from numberless diverse acts of courage and belief that human history is shaped. Each time a man stands up for an ideal, or acts to improve the lot of others, or strikes out against injustice, he sends forth a tiny ripple of hope, and crossing each other from a million different centers of energy and daring those ripples build a current which can sweep down the mightiest walls of oppression and injustice."