He's part of my family.You don't have a family, Ella.Although I had made similar comments in the past, it rankled to hear him say it. We're individuals bound by a pattern of reciprocal obligation, I said. If a group of chimps in the Amazon can be called a family, I think the Varners qualify.

But let us not forget that human love and compassion are equally deeply rooted in our primate heritage, and in this sphere too our sensibilities are of a higher order of magnitude than those of chimpanzees.