The real reward of science is the thrill of understanding something new.

The greatest question of our time is not communism versus individualism, not Europe versus America, not even the East versus the West; it is whether man can bear to live without God.

Attosecond science allows us to capture the fastest motions in the microcosm, like freezing the wingbeat of a hummingbird.

"I'm not going to limit myself just because people won't accept the fact that I can do something else."