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.

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.

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.

Best way to deal with fear is to confront it.

Having a baby is part of a woman's life, and it is surely a great waste to be afraid of life.

I mean, I suppose when I'm in London, I'm home so I'm more comfortable.

Nothing is to be feared but fear.

There are always a few people you do a lot for, and a few who do a lot for you, but they're not the same people.

Truth is created, not discover!

I had heard some women make comments about my chest, so why not show it off? Nobody wants to see a fat guy in tights. That wouldn't be fair to the fans.

That's one of the major lessons: no president should ever take this nation to war without full public debate in the Congress and/or in the public.

Truly, he thought, the way of enlightenment is like unto half a mile of broken glass.

With complete consecration comes perfect peace.