Don't knock the rich. When did a poor person give you a job?
The seaman tells stories of winds, the ploughman of bulls; the soldier details his wounds, the shepherd his sheep.
Slump, and the world slumps with you. Push, and you push alone.
A man doesn't know what he knows until he knows what he doesn't know.
Don't worry about middle age: you'll outgrow it.
The best intelligence test is what we do with our leisure.