Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp space-time so much that you could go off in a rocket and return before you set out.

One can't predict the weather more than a few days in advance.

At times, I get very lonely because people are afraid to talk to me or don't wait for me to write a response. I'm shy and tongue-tied at times. I find it difficult to talk to people who I don't know.

One is always a long way from solving a problem until one actually has the answer.

Quiet people have the loudest minds.

It matters if you don't just give up.

I thought Eddie Redmayne portrayed me very well... At times I thought he was me.