If you have an opinion, and that opinion is weak, do not consider it wisdom. - Tiresias to Pentheus - Euripides

Give me up to the Argives instead of them, O king, and so neither run any risk yourself, and let the children be saved for me; I must not love my own life, let it go; and above all, Eurystheus would like taking me, the ally of Hercules, to insult me; for he is a froward man; and the wise should pray to have enmity with a wise man, not with an ignorant disposition, for in that case one, even if unfortunate, may meet with much respect.

Talk sense to a fool and he calls you foolish.

Soon all of you immortals
Will be as dead as we are!
Come on then, what are you waiting for?
Have you run out of thunderbolts?