"Protecting elephants and conserving natural ecosystems remain my personal priorities. But I am not so sure this would…"

"I'm known for speaking my mind, a trait I probably inherited from my parents, Louis and Mary Leakey—neither of whom w…"

"I do not believe in a god who has or had a human form and to whom I owe my existence. I believe it is the man who cre…"

"A vital leap in the evolution of intellectual capacity would have been the ability to form concepts, to conceive of i…"

"Ever since Darwin tied knots between human beings and the rest of the animal world, many people have frantically atte…"

"The quality that accompanies the emergence of learning in the evolution of higher animals, namely intelligence, is su…"

"In its extreme form self-awareness manifests itself in notions such as that of the soul, but in simple form it merely…"

"It appears that the evolutionary process promotes its own progress: learning about the environment (which demands a c…"

"Prehistoric images speak to us more evocatively than any other element of the archeological record: colorful, vibrant…"

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