We are all clowns. We fool not only others but ourselves as well. Consider ham and eggs - The hen makes a contribution, but the pig is really committed. A man doesn't look under a bed unless he himself has been under one. What a school, college, or lecture bring to men depends on what men bring to carry it home in.
Experience is the name everyone gives to their mistakes.
If you plan for a decade, plant trees. If you plan for a century, teach the children. The longer the island of knowledge, the longer the shoreline of wonder. Shallow men believe in luck. Trouble is only opportunity in work clothes.