Hubris ~ Knowing Oneself

When studying Greek tragedy I remember our professor telling us how the playwrights used hubris [arrogance, pride] in their plays to demonstate how a protagonist who displayed hubris could be led to his own downfall. The Gods would show their disfavor by allowing him to have even more success, then when he felt himself to have achieved everything he wanted they would let him fall and drive him headlong into on into his own undoing.