I realized very early in life what my abilities and limitations were, and foreign languages was definitely one of my limitations. With strenuous effort, I just barely passed my French class at Harvard so I could graduate.

The river of time may fork into rivers, in which case you have a parallel reality and so then you can become a time traveler and not have to worry about causing a time paradox.

No one knows who wrote the laws of physics or where they come from. Science is based on testable, reproducible evidence, and so far we cannot test the universe before the Big Bang.

The Internet frees people to realize they don't have to live like slaves.

I think that by creating a world of plenty, by creating institutions and organizations that promote knowledge and promote understanding, I think I could be part of being in a better world.

When you look at the calculation, it's amazing that every time you try to prove or disprove time travel, you've pushed Einstein's theory to the very limits where quantum effects must dominate. That's telling us that you really need a theory of everything to resolve this question. And the only candidate is string theory.

One day I went up to my mom and I said, 'Mom, can I have permission to build a 2.3-million electron-volt atom smasher - a betatron - in the garage?' And my mom stared at me, and she said, 'Sure. Why not? And don't forget to take out the garbage.'

I get paid to do what I love. If you understand physics, the foundation of the atomic theory and relativity, you understand how the future is going to unfold. You understand what things are not possible. You understand why things work. I get paid to do what I love the most, and that is to work on the Unified Field Theory and to see the future.

When I get bored, or get stuck on an equation, I like to go ice skating, but it makes you forget your problem. Then you can tackle the problem with a fresh new insight. Einstein liked to play the violin to relax. Every physicist likes to have a past time. Mine is ice skating.

I'm not a science fiction writer, I'm a physicist.

We do spend too much time on the telephone, and you know something? We love it.

Cancer is like the common cold; there are so many different types. In the future we'll still have cancer, but we'll detect it very, very early, so that it won't kill anybody. We'll zap it at the molecular level decades before it grows into a tumor.

It's very dangerous to put astronauts on a moon base where there's radiation, solar flares and micro meteorites. It'd be much better to put robots on the moon and have them mentally connected to astronauts on the Earth.

Remember the movie 'The Matrix,' where virtual information popped up to help inform physical day-to-day reality? Such things won't always be the stuff of Hollywood. If the Internet is accessible via contact lenses, biographies will appear next to the faces of the people we talk to, and we will see subtitles if they speak a foreign language.

I used to watch the old 'Flash Gordon' series on TV, and it was thrilling to rocket to the planet Mongo every week. But after a while, I figured out that although Flash got the girl and all the accolades, it was really Dr. Zarkov who made the series work. Without Dr. Zarkov, there could be no Flash Gordon.

Physics is often stranger than science fiction, and I think science fiction takes its cues from physics: higher dimensions, wormholes, the warping of space and time, stuff like that.

If I wasn't a professional scientist, I'd be an amateur scientist. But plan B was to go into computers.

My point is, no one can stop the Internet. No one can stop that march. It doesn't mean that it's going to be smooth, though.

Already from your own cells scientists can grow skin, cartilage, noses, blood vessels, bladders and windpipes. In the future, scientists will grow more complex organs, like livers and kidneys. The phrase 'organ failure' will disappear.

I predict that technology will enable people to transmit their neuronal, actual feelings over the Internet.

Years ago, I picked up figure skating. How hard could spins and jumps be, I thought? It's just applied Newtonian physics. After repeatedly falling on my rear end, I realized it was harder than I thought. But it had an upside. That is how I met my wife, who was ice dancing at the Rockefeller Center ice rink.

The H-1B visa is called the 'genius visa' for a reason.

It's inevitable that we'll have some form of designer children, fueled not just by the science but by parents' hard-wired desire to give their children every advantage.

If space is a fabric, then of course fabrics can have ripples, which we have now seen directly. But fabrics can also rip. Then the question is what happens when the fabric of space and time is ripped by a black hole?

Sooner or later, we will face a catastrophic threat from space. Of all the possible threats, only a gigantic asteroid hit can destroy the entire planet. If we prepare now, we better our odds of survival. The dinosaurs never knew what hit them.

One day when I was 8 years old, everyone was talking in hushed tones about a great scientist that had just died. His name was Albert Einstein.

Our astronauts, when they go orbiting around the earth, they actually come back slightly younger than a twin that they would have on the planet Earth who was stationary. This is called the twin paradox.

I have nothing against investment banking, but it's like massaging money rather than creating money.

You can't satisfy everybody. If you do, you're probably doing something wrong.

When Dee Snider and I get together for breakfast, it's just two Long Island guys hanging out.

Mother Nature and Father Time have not been happy with me.

A joke bombing on stage doesn't bother me, especially if it's intended to bomb.

President-elect Trump wasn't my choice, but I'm going to be like Dave Chappelle, and I'm going to give him a chance - but I think there are people out there with legitimate worries.

I tell people the most important move they can make is not in the ring. It's taking the time to get to know Mr. McMahon.

I don't advocate any child following in their parent's footsteps when their parent's footsteps are as crooked as mine are.

I think I had four concussions throughout my career that were diagnosed, and I guess that I've had seven more. But the fact that three of them came in a four month span when I was making a comeback in 2004 is a little bit scary.

When people see my show, they may not laugh out loud as they do with some of the classic comedians, but they do enjoy it. I regret that I called it comedy to begin with; I should have called it 'An Evening With' or put it down as spoken word. But the emphasis is always on funny stories.

The idea of standing five feet away from Norah Jones and listening to her sing Neil Young's 'Down By The River' was just phenomenal. I compare that to what my kids know of at a concert, which is sitting in a stadium and watching a huge screen.

As great a spectacle as WrestleMania is, there's something to be said for seeing a guy you like telling stories from the heart from 20 feet away.

As a halfway decent college DJ, I had been exposed to some great progressive stuff and always took pride in unearthing musical gems.

I'm glad I had a chance to see great music played up close and live. In a way, that's what I hope my show does. It's almost like an acoustic evening with Mick Foley.

It's funny: wrestlers and comics bond over remembering their best shows and their absolute worst shows.

There is nothing like the indignity of not fitting into a roller coaster.

I always had an appreciation for diverse musical styles.

I look back on my career and my time as commissioner with great fondness.

Everybody has the idea of Santa in their head and in their heart.

I think doing The Improv is a little more ominous than doing a college campus because it was so different than anything I'd done.

I haven't worn jewelry since one of the front teeth I had made into an earring became no longer necessary because I lost the ear.

Edge goes out every night, and not just on pay per views; every night, Edge goes out there with the intention of stealing the show. I know that he felt like his title run had not been given the respect from the company that it deserved, and he was really hell-bent on proving that he belonged as a main event guy.

You have to believe in yourself. But you know what? There's a fine line between believing in yourself and being delusional. And I'm sure there were a lot of people who thought I was being delusional when they saw me attempting to become a big shot in the world of pro wrestling. Luckily, it worked out: it doesn't work out for that many people.