Hang in there, retirement is only thirty years away!

I like physics, but I love cartoons.

Every man should marry. After all, happiness is not the only thing in life.

We have made remarkable progress in the last hundred years, but if we want to continue, our future is in space.

I am damned if I'm going to die before I have unraveled more of the universe

What was God doing before the divine creation?

If the rate of expansion one second after the Big Bang had been smaller by even one part in a hundred thousand million million, it would have recollapsed before it reached its present size. On the other hand, if it had been greater by a part in a million, the universe would have expanded too rapidly for stars and planets to form.