Dono

“Beware the irrational, however seductive. Shun the 'transcendent' and all who invite you to subordinate or annihilate yourself. Distrust compassion; prefer dignity for yourself and others. Don't be afraid to be thought arrogant or selfish. Picture all experts as if they were mammals. Never be a spectator of unfairness or stupidity. Seek out argument and disputation for their own sake; the grave will supply plenty of time for silence. Suspect your own motives, and all excuses. Do not live for others any more than you would expect others to live for you.”
― Christopher Hitchens, Letters to a Young Contrarian

“Never presume yours is a better morality.”
― Graham Greene

“I'm not upset that you lied to me, I'm upset that from now on I can't believe you.”
― Friedrich Nietzsche

“Science is the great antidote to the poison of enthusiasm and superstition.”
― Adam Smith, An Inquiry into the Nature and Causes of the Wealth of Nations