I was from a poor Jewish family in the South Bronx. My father was a plumber, but when I was 16, he got sick and I had to take over. Being a plumber in the South Bronx wasn't fun.

There is so much to groak; So little to groak from.

Einstein, in the special theory of relativity, proved that different observers, in different states of motion, see different realities.

A lot of my research time is spent daydreaming - telling an imaginary admiring audience of laymen how to understand some difficult scientific idea.

You have to say now that space is something. Space can vibrate, space can fluctuate, space can be quantum mechanical, but what the devil is it?

Unforeseen surprises are the rule in science, not the exception. Remember: Stuff happens.

[Richard Feynman] truly believed that if you couldn't explain something simply, you didn't understand it.

We often say that the earth is a sphere, but to be precise, the term sphere refers only to the surface. The correct mathematical term for the solid earth is a ball.

I was going to engineering school but fell in love with physics.

Science blogs bore me. When everyone is an expert, no one is an expert.

At some point we have to give up and say that's just the way it is. Or, not give up and push on.

Dreams can exist but not come trueAnd if you don't believe me just ask yourselfHow can the universe know what you want, If it never hears it from you

If the nose of Cleopatra had been a little shorter the whole face of the world would have been changed.

Comedians don't have hits. You have to have a whole brand-new hour. You have no hits to rely on.

Intelligent people make decisions based on opportunity costs.

Artists are taught to be humble about their impact, especially in folk music. It's so ingrained that I have a hard time even thinking I had any impact other than what a normal hit song would have.

Animation is a great way to work. No early morning call times, no make-up chair. In live action ,you're always fighting the clock; the sun is always going down too soon.

Thus every dog at last will have his day - He who this morning smiled, at night may sorrow; The grub today's a butterfly tomorrow.

Full purse makes no noise.

And you know, the people who hate kids and don't want kids always end up having 50 of them.

I think the idea of moving to a cleaner energy future and doing more energy efficiency makes smart sense.