“It matters if you just don’t give up.”

The development of full artificial intelligence could spell the end of the human race.

When the going gets tough, the tough take a coffee break.

Nothing is fool-proof to a sufficiently talented fool.

Do you ever wonder how much deeper the ocean would be without sponges?

There should be a better way to start a day than waking up every morning.

I have sold more books on physics than Madonna has on sex.

I have sold more books on physics than Madonna has on sex.

I don’t fear God- I fear His believers.

God abhors a naked singularity.

To confine our attention to terrestrial matters would be to limit the human spirit.

Once I wept for I had no shoes. Then I met a man with no feet, so I took his shoes. I mean, it wasn’t as if he was going to need them.

It is all right to make mistakes; nothing is perfect because with perfection, we would not exist.

What I have done is to show that it is possible for the way the universe began to be determined by the laws of science.

I regard the afterlife to be a fairy story for people that are afraid of the dark.

Nothing cannot exist forever.

Mankind’s greatest achievements have come about by talking and its greatest failures by not talking. It doesn’t have to be like this.