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.

Our external physical reality is a mathematical structure.

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

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.

So with each advance in understanding come new questions. So we need to be very humble. We shouldn’t have hubris and think that we can understand everything. But history tells us that there is good reason to believe that we will continue making fantastic progress in the years ahead.

I believe that consciousness is the way information feels when being processed.