If our species is to survive, our future will probably require outposts beyond our own planet.

The lack of understanding of something is not evidence for God. It's evidence of a lack of understanding.

The purpose of education is not to validate ignorance but to overcome it.

I like to say that while antimatter may seem strange, it is strange in the sense that Belgians are strange. They are not really strange; it is just that one rarely meets them.

Without science, everything is a miracle.

As a scientist, I don't believe anything. Science shouldn't use the word belief. There are things more likely and less likely. Science can say nothing with absolute certainty.

[The writers of the holy books] did not even know the earth revolves around the sun. Why are we listening?

Forget Jesus. The stars died so that you could be here today.

Keeping religion immune from criticism is both unwarranted and dangerous.

Whatever the evolutionary basis of religion, the xenophobia it now generates is clearly maladaptive.

It is a shame when nonsense can substitute for fact with impunity.

I listened to a lot of tapes of British theatre actresses and tried to learn from them. As Americans, we don't have such a gift with language.

It’s impossible to give thanks and simultaneously feel fear

When you're not practicing, someone somewhere is. And when the two of you meet, assuming roughly equal ability, the other person will win.

It's incredible how much intelligence is used in this world to prove nonsense.

Laughter is Humanity's mechanism to escape suffering.

A first sign of the beginning of understanding is the wish to die.

He who trusts a secret to his servant makes his own man his master.

Nothing in life comes easy. Everything comes with a sacrifice

I use photos a lot for drawing people and personalities, but they're almost never photos that I've taken.

Happy are they that hear their detractions, and can put them to mending.