If you found this interesting but don't want to dive into reading Darwin's works (as the author seems to imply we should) I highly recommend Richard Dawkins' "T

If you found this interesting but don't want to dive into reading Darwin's works (as the author seems to imply we should) I highly recommend Richard Dawkins' "The Selfish Gene". I haven't read "On the Origin of Species" but I'd bet "The Selfish Gene" will probably be a more efficacious read for most people