A person whose skin is metallic can no more have its reproduction restricted than a black-skinned person. Regarding life as a form of machinery and intelligent machines as people without our environmental limitations is essential in understanding FAP, the Final Anthropic Principle, which deals with evolution in the far future.

When I began my career as a cosmologist some twenty years ago, I was a convinced atheist. I never in my wildest dreams imagined that one day I would be writing a book purporting to show that the central claims of Judeo-Christian theology are in fact true, that these claims are straightforward deductions of the laws of physics as we now understand them. I have been forced into these conclusions by the inexorable logic of my own special branch of physics.

The first human-to-computer uploads of 2100 will prove that a perfect simulation is the thing being simulated - that a silicon soul doesn't need a physical body to inhabit. So eventually everybody who ever lived will be resurrected inside a living machine indistinguishable from God. Isn't it amazing what you can do with unlimited hard-disk space?

If the human species, or indeed any part of the biosphere, is to continue to survive, it must eventually leave the Earth and colonize space. For the simple fact of the matter is, the planet Earth is doomed... Let us follow many environmentalists and regard the Earth as Gaia, the mother of all life (which indeed she is). Gaia, like all mothers, is not immortal. She is going to die. But her line of descent might be immortal. . . . Gaia's children might never die out-provided they move into space. The Earth should be regarded as the womb of life-but one cannot remain in the womb forever.

Christianity is not a mere religion but an experimentally testable science.

Whereas many philosophers and theologians appear to possess an emotional attachment to their theories and ideas........scientists feel no qualms about suggesting different but mutually exclusive explanations for the same phenomenon.

We physicists know that a beautiful postulate is more likely to be correct than an ugly one. Why not adopt this Postulate of Eternal Life, at least as a working hypothesis?