I did not set out to explain the extinction of the dinosaurs. I'm a particle physicist, and I was actually thinking about dark matter along with some collaborators.

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.

It's hubris to think that the way we see things is everything there is.

Although I was first drawn to math and science by the certainty they promised, today I find the unanswered questions and the unexpected connections at least as attractive.

Scientific research involves going beyond the well-trodden and well-tested ideas and theories that form the core of scientific knowledge. During the time scientists are working things out, some results will be right, and others will be wrong. Over time, the right results will emerge.

You can be only a modest distance away from the gravity brane, and gravity will be incredibly weak.

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