I had this illusion that if I kind of dressed badly that I wouldn't stand out. You know, so I actually went out of my way to not look different to the extent I could.

Physicists have yet to understand why the Higgs boson's mass is what it is.

I considered going into business or becoming a lawyer - not for the money, but for the thrill of problem-solving.

You have to be careful when you use beauty as a guide. There are many theories people didn't think were beautiful at the time but did find beautiful later—and vice versa. I think simplicity is a good guide: The more economical a theory, the better.

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.

We certainly don't yet know all the answers. But the universe is about to be pried open.

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