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  • A drop of water is not immortal; it can be resolved into oxygen and hydrogen. If, therefore, a drop of water were to maintain that it had a quality of aqueousness which would survive its dissolution we should be inclined to be skeptical. In like manner we know that the brain is not immortal.

    Bertrand Russell (1957). “Why I Am Not a Christian: And Other Essays on Religion and Related Subjects”, p.51, Simon and Schuster