An ordinary mistake is one that leads to a dead end, while a profound mistake is one that leads to progress. Anyone can make an ordinary mistake, but it takes a genius to make a profound mistake.

Why is there something rather than nothing?

If you don't make mistakes, you're not working on hard enough problems. And that's a big mistake.

The brain rewards us for interacting with beautiful things. In this way, evolution wants to encourage us to do what is good for us.

When religion talks about our aspirations and our sense of morality, I do not believe that science can contradict it. However, when religion contradicts science on matters of fact, religion must yield.

The answer to the ancient question Why is there something rather than nothing would be that nothingis unstable.

In physics, you don't have to go around making trouble for yourself - nature does it for you.