The artificial products do not have any molecular dissymmetry; and I could not indicate the existence of a more profound separation between the products born under the influence of life and all the others.

I don't believe that the ultimate theory will come by steady work along existing lines. We need something new. We can't predict what that will be or when we will find it because if we knew that, we would have found it already!

An alleged scientific discovery has no merit unless it can be explained to a barmaid.

String theory is not the only theory that can accommodate extra dimensions, but it certainly is the one that really demands and requires it.

True science discovers God in an ever-increasing degree — as though God were waiting behind every door opened by science.

When the basic status of a theory is clear, and all that needs to be cleared are details, you can collaborate. But if the main structure of a hypothesis isn't established, and you want to change the paradigm - like it was the case in the 1960s - it's better to work alone.