Steve Grand is the creator of what I think is the nearest approach to artificial life so far, and his first book, Creation: Life and How to Make It, is as interesting as you would expect. But he illuminates more than just the properties of life: his originality extends to matter itself and the very nature of reality. Not since David Deutsch's The Fabric of Reality have I encountered such a compelling invitation to think everything out afresh, from the bottom up.

Presumably there is indeed no purpose in the ultimate fate of the cosmos, but do any of us really tie our life's hopes to the ultimate fate of the cosmos anyway? Of course we don't; not if we are sane. Our lives are ruled by all sorts of closer, warmer, human ambitions and perceptions.

There is another kind of altruism that seems to go beyond that, a kind of super-altruism, which humans appear to have. And I think that does need a Darwinian explanation.

Nature is not cruel, only pitilessly indifferent. This is one of the hardest lessons for humans to learn. We cannot admit that things might be neither good nor evil, neither cruel nor kind, but simply callous-indifferent to all suffering, lacking all purpose.

The idea that God could only forgive our sins by having his son tortured to death as a scapegoat is surely, from an objective point of view, a deeply unpleasant idea. If God wanted to forgive us our sins, why didn't he just forgive them? Why did he have to have his son tortured?

People like to trace their ancestry.

Science, as opposed to technology, does violence to common sense.