Travel at faster than the speed of light certainly can have dramatic implications that are difficult to understand, such as time travel.

Both religions and musicals work best with energetic and committed believers. Cynicism or detachment would have destroyed the magic - something true of religion, too.

One of the nice things about math and science is it’s obvious, you get the answer or you don’t get the answer.

Science is a combination of theory and experiment and the two together are how you make progress.

There is real confusion about what it means to be right and wrong - the difference between what spiritual beliefs are and what science is.

An almost indispensable skill for any creative person is the ability to pose the right questions. Creative people identify promising, exciting, and, most important, accessible routes to progress - and eventually formulate the questions correctly.

There are many aspects of time we just do not understand. That’s the thing about writing a popular book: You realize the things you understand because for those you can give a really simple explanation. But some things about time I just don’t know how to give simple explanations for, even though I can tell you mathematically what’s going on.