Evolution advances, not by a priori design, but by the selection of what works best out of whatever choices offer. We are the products of editing, ra….

I tell my students to try early in life to find an unattainable objective..

The only use for an atomic bomb is to keep somebody else from using one. It can give us no protection - only the doubtful satisfaction of retaliation….

A scientist lives with all reality. There is nothing better. To know reality is to accept it, and eventually to love it..