The reward of pain is experience.
ATHENA: You wish to be called righteous rather than act right. [...] I say, wrong must not win by technicalities.
Chorus: Zeus, who guided men to think who laid it down that wisdom comes alone through suffering. Still there drips in sleep against the heart grief of memory; against our pleasure we are temperate.
He hears but half who hears one party only.
Too few rejoice at a friend's good fortune.
It is always in season for old men to learn.