I've seen children's eyes light up when I tell them about black holes and the Big Bang.

Many different planets are many different distances from their host star; we find ourselves at this distance because if we were closer or farther away, the temperature would be hotter or colder, eliminating liquid water, an essential ingredient for our survival.

My best teachers were not the ones who knew all the answers, but those who were deeply excited by questions they couldn't answer.

I've seen children's eyes light up when I tell them about black holes and the Big Bang.

The idea that there could be other universes out there is really one that stretches the mind in a great way.

I like to think that Einstein would look at string theory’s journey and smile, enjoying the theory’s remarkable geometrical features while feeling kinship with fellow travelers on the long and winding road toward unification.

I believe that through its rational evaluation of truth and indifference to personal belief, science transcends religious and political divisions and so does bind us into a greater, more resilient whole.