Because the art of Africa was on rock shelters, not deep in caves, as in Europe, the ravages of time have eroded most of a rich expression. What we n… - Richard Leakey

It appears that the evolutionary process promotes its own progress: learning about the environment (which demands a certain intelligence) means living in a stable social mileau (which demands at least an equal and possibly a greater intelligence); as social intelligence increases, so too will the ability to learn; this in turn encourages an even longer social apprenticeship; and longer group living leads to more social intelligence.

I think both Louis and I were looking for more or less the same thing, and that is, when did our species, Homo, begin?

Protecting elephants and conserving natural ecosystems remain my personal priorities. But I am not so sure this would be so were I ill, hungry, and living in dispair. ...We must somehow find a way to provide for our own species if we are also to preserve others.