Who said it had to come from anything? Who said the universe itself is not eternal? Ever heard of the Big Bang, Big Crunch theory? Or the theory that says that eventually black holes will consume everything in the universe, and eventually start eating each other. The last black hole will have so much energy and matter contained in it it will inevitably collapse on itself. This will create a singularity, causing another Big Bang. Or we could just still be in the singularity. Either way, he was talking about evolution in animals, not cosmic evolution, nor the origins of life.