Even the old should learn.

For the poison of hatred seated near the heart doubles the burden for the one who suffers the disease; he is burdened with his own sorrow, and groans on seeing another's happiness.

By polluting clear water with slime you will never find good drinking water.

Learning is ever in the freshness of its youth, even for the old.

Rumours voiced by women come to nothing.

ATHENA: There are two sides to this dispute. I've heard only one half the argument. (...) So you two parties, summon your witnesses, set out your proofs, with sworn evidence to back your stories. Once I've picked the finest men in Athens, I'll return. They'll rule fairly in this case, bound by a sworn oath to act with justice.

Fear is stronger than arms.