With mammals the male appears to win the female much more through the law of battle than through the display of his charms.
Charles DarwinLinnaeus and Cuvier have been my two gods, though in very different ways, but they were mere schoolboys to old Aristotle.
Charles Darwin...conscience looks backwards and judges past actions, inducing that kind of dissatisfaction, which if weak we call regret, and if severe remorse.
Charles DarwinIt is not the conscience which raises a blush, for a man may sincerely regret some slight fault committed in solitude, or he may suffer the deepest remorse for an undetected crime, but he will not blush... It is not the sense of guilt, but the thought that others think or know us to be guilty which crimsons the face.
Charles Darwin