If you're hungry for too long, you won't be horny. Sex is pretty good. It's one of the things that I think is a pretty good litmus test for health. And so our job is to shift our species out of fear, out of hunger and into love and include sex. To lead a life that you want that's worthy, you've got to have some time to do the things that are worthy. That means you cannot spend all of your time doing less effective things like running away from tigers.