A foolish consistency is the hobgoblin of little minds, adored by little statesmen and philosophers and divines. With consistency a great soul has simply nothing to do. He may as well concern himself with his shadow on the wall. Speak what you think today in hard words, and tomorrow speak what tomorrow thinks in hard words again, though it contradict every thing you said today.
—Ralph Waldo Emerson, American essayist and poet, Self-Reliance, 1841