None the wiser

"You are old, Daddy dearest," the young girl said,

"And your hair has become very white;

And yet you incessantly stand on your head.

Do you think, at your age, it is right?"

"In my youth," said Auld Da to the daughter he loved,

"I feared it might injure the brain;

But now that I'm perfectly sure I have none,

Why, I do it again and again."

Lewis Carroll (adapted!)