This star dust shakes together, and pretty soon some of it gets to be one chemical and some of it gets to be another, like water and salt and lime and phosphorus and stuff like that, and it gets together in little combinations and it makes little animals, so little you couldn't see them, and they get together and make bigger animals, and pretty soon they have brains and stomachs--and there you are.

This electricity or something that shook the star dust together and made the chemicals, and shook the chemicals together and made the animals--well, it's fierce stuff.

It wants to find out all about itself.
It keeps making animals with bigger brains all the time, so it can examine itself and write books about itself--but the animals have to be good killers, or something else kills them.

This electricity that makes 'em don't care which kills which.

It knows the best killer will have the best brain in the long run; that's all it cares about.