Humanity can not express its faculty of Comprehension and domination except though the Symbols of Creation (and Death). Once the context is defined, humanity can act at its own level on future events. Only the Scenario of Prehistory has reached us, while the traces of the acts are very rare and almost always incomprehensibile. It follows that the subject of our studies can only be an Empty Scene, and it is as if they would ask us to reconstruct a theatrical perfomance without having ever seen it, starting from the wings depicting a palace, a lake and a forest in the background.

Andrè Leroi-Gourhan