The major sites, such as Altamira, are often surrounded by smaller sites within a 10-mile radius, as if they were centers of political or social alli… - Richard Leakey

In its extreme form self-awareness manifests itself in notions such as that of the soul, but in simple form it merely means to be aware of oneself as an individual among others.

Where Breuil has seen chaos—or at least, randomness—in wall art, Leroi-Gourhan sought and found order.

A vital leap in the evolution of intellectual capacity would have been the ability to form concepts, to conceive of individual objects as belonging to distinct classes, and thus do away with the almost intolerable burden of relating one experience to another. Concepts, moreover, can be manipulated and this is the root of abstract thought and of invention. The formation of concepts is also a necessary, but apparently not sufficient, condition for the emergence of language.