Legend has it that a proud young man came to Socrates asking for knowledge. He walked up to the philosopher and said, "O great Socrates, I come to you for knowledge." Socrates recognized a pompous numbskull when he saw one. So, he led the young man through the streets, to the sea, and chest deep into water. Then he asked, "What do you want?" "Knowledge, O wise Socrates," said the young man with a smile.

Socrates put his strong hands on the man's shoulders and pushed him under. Thirty seconds later Socrates let him up. "What do you want?" he asked again. "Wisdom," the young man sputtered, "O great and wise Socrates."

Socrates pushed him under again. Thirty seconds passed, thirty-five. Forty. Socrates let him up. The man was gasping. "What do you want, young man?" Between heavy, heaving breaths the fellow wheezed, "Knowledge, O wise and wonderful..."

Socrates jammed him under again Forty seconds passed. Fifty. "What do you want?" "Air!" he screeched. "I need air!"

"When you want knowledge as you have just wanted air, then you will have knowledge."