Hubris and the Fall
Of all the creatures that breathe and move upon the earth, none is more to be pitied than man. So long as the gods grant him prosperity and his knees move lightly, he thinks he shall never suffer misfortune in time to come. But when the blessed gods bring sorrow upon him, he bears it as he must, with an enduring heart. For the mind of man upon the earth is even such as the day the father of gods and men brings upon him.
— Odysseus, in Homer’s Odyssey, Book 18
Call no man happy until he is dead.
— Solon to Croesus, reported by Herodotus