The amazing thing is that every atom in your body came from a star that exploded.

Science is not just there for technology. It's part of what addressing who you are in the universe and understanding your place in the cosmos. Good art, good literature, good music - all of that is for that and science is a part of it.

Every atom in your body came from a star that exploded. And the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics: you are all stardust.

We now know that we are more insignificant than we ever imagined. If you get rid of everything we see, the universe is essentially the same. We constitute a 1 percent bit of pollution in a universe . . . we are completely irrelevant.

We live at a very special time . . . the only time when we can observationally verify that we live at a very special time!

In 5 billion years, the expansion of the universe will have progressed to the point where all other galaxies will have receded beyond detection.

The illusion of purpose and design is perhaps the most pervasive illusion about nature that science has to confront on a daily basis.