When I had got my notes all written out I thought I'd polish it off in two summers, but it took me twenty-seven years.

We human beings do have some genuine freedom of choice and therefore some effective control over our own destinies. I am not a determinist. But I also believe …

When I was a child, the institution of war, which by then had been in existence for perhaps five thousand years, was still taken for granted by most people in …

We have been God-like in our planned breeding of our domesticated plants and animals, but we have been rabbit-like in our unplanned breeding of ourselves.