"Reason is God's crowning gift to man." -- Sophocles, Oedipus Rex

"Man is a reasoning animal." -- Seneca

"Human reason freed men's minds from wondering at portents, by wresting from Jupiter his bolts and power of thunder, and ascribing to the winds the noise and to the clouds the flame." -- Marcus Manilius

"How comes it to pass, then, that we appear such cowards in reasoning, and are so afraid to stand the test of ridicule?" -- Anthony Cooper

"The sleep of reason produces monsters. " -- Goya

"Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing had happened." -- Winston Spencer Churchill"

What is reasonable is real; that which his real is reasonable." -- Hegel

"If we would be guided by the light of reason, we must let our minds be bold." -- Louis Brandeis

Rationalism is an adventure in the clarification of thought." -- Alfred North Whitehead"Unreason and anti-intellectualism abominate thought. ... But shouting is not a substitute for thinking and reason is not the subversion but the salvation of freedom." -- Adlai Stevenson

"It would be an endless task to trace the variety of meannesses, cares, and sorrows into which women are plunged by the prevailing opinion that they were created rather to feel than reason, and that all the power they obtain must be obtained by their charms and weakness." -- Mary Wollstonecraft

"Saying that man is distinguished by the faculty of reason is more appropriate than saying that he is characterized by it; for those who put this faculty to work distinguish themselves not only from the animals, but from most men." -- Rick Triplett