Some advice for Harry.

"You can never step into
the same river twice," said Harry, putting down
his coffee cup. "Your quite wrong,
said George, bending down,
picking up his baseball bat.
"You can never step into
the same river once."

"Then what", asked Harry,
"is the sound of one hand clapping."

"Well that's easy", replied George,
while reaching out to hang his serviette
upon a nearby kneeling seaman.
"It's the simple sound of silence
in unison."

George, you see, was a sixth grader.
He also had several degrees in gravel manipulation,
a brother in the police force,
and numerous go-karts
in various lock-up
garages.