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

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.

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

When I was in school I liked math because all the problems had answers. Everything else seemed very subjective.

Creativity is essential to particle physics, cosmology, and to mathematics, and to other fields of science, just as it is to its more widely acknowledged beneficiaries - the arts and humanities.

Sometimes models are surprisingly smart.