Homo loquax?

Tom Wolfe, in his National Endowment for the Humanities Lecture, intimates that it is speech which separates humans from animals, short-circuits evolution, and is the foundation of religion. He suggests "Homo loquax" as a designation for humans rather than "Homo sapien."

Heard a short excerpt on "Weekend Edition" this morning. I'll check out the longer version when the audio comes up (should be later today).