You can get an Egg McMuffin all day; you just can't get the hamburger all day.

No one wants to die, and no one wants to die poor. These are the two fundamental truths that transcend culture, they transcend politics, they transcend economic cycles.

No doubt, the most challenging class of questions in science is the origin of things.

If there's something that someone else can do, let them do it. If I couldn't do it uniquely, let someone else do it and I would get back to the lab.

Some claim evolution is just a theory. As if it were merely an opinion. The theory of evolution, like the theory of gravity, is a scientific fact. Evolution really happened. Accepting our kinship with all life on Earth is not only solid science. In my view, it’s also a soaring spiritual experience.

My interest in the space program has a certain purity to it because I recognize the romance of it but I was never seduced by it. That allowed me to view it through a more purely scientific lens. My interest in space while in school came about through my scientific activities.

What are you doing? Why are you concerning yourself with the meaning of meaning?