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.

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

All too often, schools resemble museums, reflecting the past rather than shaping the future

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

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."

Our external physical reality is a mathematical structure.

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