Cowardice asks the question - is it safe? Expediency asks the question - is it politic? Vanity asks the question - is it popular? But conscience asks the question - is it right? And there comes a time when one must take a position that is neither safe, nor politic, nor popular; but one must take it because it is right.

Martin Luther King, Jr.

Civil rights activist and political philosopher: 1929 - 1968
A Testament of Hope: The Essential Writings and Speeches (ed. 1986)