In 2056, I think you'll be able to buy T-shirts on which are printed equations describing the unified laws of our universe.

If I get a parking ticket, there is always a parallel universe where I didn't. On the other hand, there is yet another universe where my car was stolen.

The core of a scientific lifestyle is to change your mind when faced with information that disagrees with your views, avoiding intellectual inertia, yet many of us praise leaders who stubbornly stick to their views as "strong."

In infinite space, even the most unlikely events must take place somewhere.

There’s no better guarantee of failure than convincing yourself that success is impossible, and therefore never even trying.

If life were a movie, physical reality would be the entire DVD: Future and past frames exist just as much as the present one.

For me, [John Wheeler] was the last Titan, the only physics superhero still standing.