Your past is just a story and once you realize this it has no power over you

The cosmos is within us. We are made of star-stuff. We are a way for the cosmos to know itself.

The universe may have a beginning, but it has no end.

The only way to escape the corruptible effect of praise is to go on working.

If you cant explain it simply, you dont understand it well enough.

I believe in the possibility of time travel and that it has already happened.

The most destructive element in the human mind is fear.