Evolution

I was at the zoo the other day, and walked by the ape cage, and I saw an ape sitting there with two books opened up in front of him.

One was the Bible, and the other was The Origin Of Species by Charles Darwin.

I said to the ape "you can read?"

He said "yes, but I'm having trouble understanding what I'm reading, I can't figure out if I am my brothers keeper or my keepers brother.