The rule of thumb based into the brain by natural selection would not have been, Be nice to your kin and be nice to potential reciprocators. It would have been, Be nice to everybody, because everybody would have been included.

What has happened is that genetics has become a branch of information technology. It is pure information. It's digital information. It's precisely the kind of information that can be translated digit for digit, byte for byte, into any other kind of information and then translated back again. This is a major revolution. I suppose it's probably "the" major revolution in the whole history of our understanding of ourselves. It's something would have boggled the mind of Darwin, and Darwin would have loved it, I'm absolutely sure.

After sleeping through a hundred million centuries, we have finally opened our eyes on a sumptuous planet, sparkling with color, bountiful with life.

All life evolves by the differential survival of replicating entities.

There is something so mysterious that it is almost like God. God is in the equations. God is in the fundamental constants. And that's fine. I mean, that's just redefinition of that which we find mysterious at the basis of the universe.

The idea of tiny changes cumulated over many steps is an immensely powerful idea, capable of explaining an enormous range of things that would be otherwise inexplicable.

So Occam's razor - Occam says you should choose the explanation that is most simple and straightforward - leads me more to believe in God than in the multiverse, which seems quite a stretch of the imagination.