Happy the country that lives on nothing but its wits; cursed be the one that thinks it can get rich by planting or digging or drilling for wealth.
If you can keep your wits about you while all others are losing theirs, and blaming you. The world will be yours and everything in it, what's more, you'll be a man, my son.
A man can live on his wits and his balls for only so long.
Never have a battle of wits with an unarmed person.