A rabbi sat down on an airplane, and the man next to him struck up a conversation.
"So what do you do for a living?" the passenger said.
"I'm a rabbi," the rabbi replied.
"Oh, a clergyman," the man said condescendingly. "Well, rabbi, I really don't
know much about religion, but I always felt you could sum it up in one word: Do
unto others as you would have others do unto you."
The rabbi didn't say anything to that. Instead, he asked the passenger, "So nu --
and what do YOU do for a living?"
"Im an astrophysicist," he said importantly. "I'm working with NASA on a project
using the Hubble telescope to find out how galaxies are made."
Well," said the rabbi, "I don't knowe much about astromony, but I guess you could sum
it all up in one sentence: Twinkle, twinkle, little star -- how I wonder what you are!"