“Life would be tragic if it weren’t funny.”

I think the human race doesn’t have a future if we don’t go into space. We need to expand our horizons beyond planet Earth if we are to have a long-term future.

I’m not afraid of death, but I’m in no hurry to die.

I’d say I don’t believe in God, but I’m afraid He might hear me.

There is a fundamental difference between religion, which is based on authority, and science, which is based on observation and reason. Science will win because it works.

There is no prescribed route to follow to arrive at a new idea. You have to make the intuitive leap.

Time travel may be possible, but it is not practical.

Science is not only a disciple of reason but, also, one of romance and passion.

It matters if you just don’t give up.

We are all now connected by the Internet, like neurons in a giant brain.

One can’t prove that God doesn’t exist. But science makes God unnecessary. The laws of physics can explain the universe without the need for a creator.

I have experimental evidence that time travel is not possible.

Science can explain the universe without the need for a Creator.

I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.

I like physics, but I love cartoons.

One is always a long way from solving a problem until one actually has the answer.

If you are lucky enough to find love, remember it is there and don’t throw it away.

I wanted to buy a candle holder, but the store didn’t have one. So I got a cake.

A friend said to me, “I think the weather is trippy.” I said, “No, man, it’s not the weather that’s trippy, perhaps it’s the way we perceive it.” And then I realized I just should have said, “Yeah.”

I used to do drugs. I still do drugs. But I used to, too.

The telephone will be used to inform people that a telegram has been sent.

I never said all actors are cattle; what I said was all actors should be treated like cattle.

Television has done much for psychiatry by spreading information about it, as well as contributing to the need for it.

If you can’t sleep, count sheep. Don’t count endangered animals. You will run out.

I like cottage cheese. That’s why I want to try other dwelling cheeses, too. How about studio apartment cheese? Tent cheese? Mobile home cheese? Do not eat mobile home cheese in a tornado.