Volcanoes on Mars suggest to Sam that the same kinds of processes that take place on Earth happen on other worlds.

VOA: special.2010.07.28

Maybe in this world, minds and bodies are identical, even though in other logically possible worlds the identity comes apart.

也许在这个世界,心灵和身体就是相同的,即使在其他逻辑世界中,不存在这种同一性

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