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

Leroi-Gourhan surveyed more than sixty caves and saw order in the distribution of their images. Deer... often appeared in entranceways but were uncommon in main chambers. Horse, bison, and ox were the predominant creatures of the main chambers. Carnivores mostly occurred deep in the cave system.

Next to the discovery of the Turkana boy, the visit to Lascaux ranks as one of the great moments of my life.

The challenge for individuals in primate societies is to be able to predict the behavior of others. One way would be for individuals to have a huge mental bank in their brains, which stored every possible action of their fellow troop members and their own appropriate actions.