“The laws of science do not distinguish between the past and the future.”

Nothing is better than reading and gaining more and more knowledge.

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.

The big difference for me is that, as I get older, I find it’s a lot easier to stay in shape than it is to get back in shape.

Perfect behaviour is born of complete indifference.

My justification is that most people my age spend a lot of time thinking about what they’re going to do for the next five or ten years. The time they spend thinking about their life, I just spend drinking.

Indifference was our greatest enemy.

There’s no doubt we were unworthy, but we were never worthless. Big difference.

Truth cannot be sacrificed at the altar of pretended tolerance. Real tolerance is deference to all ideas, not indifference to the truth.

There’s a monumental difference in believing in God and believing God.

There is less difference than many suppose between the ideal Socialist system, in which the big businesses are run by the State, and the present Capitalist system, in which the State is run by the big businesses.