There are three things which the superior man guards against. In youth ... lust. When he is strong ... quarrelsomeness. When he is old ... covetousness.
ConfuciusAt 15 I set my heart on learning; At 30 I firmly took my stand; At 40 I had no delusions; At 50 I knew the Mandate of Heaven; At 60 my ear was attuned; At 70 I followed my heart's desire without overstepping the boundaries of right.
Confucius