Application to Other Species. Cited E-mail the author.
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It is self-evident that the human mind possesses capabilities far in excess of those required for the bare maintenance of personal identity. The three criteria operate at a level of consciousness which is lower than that of language, empathy, skill, foresight, and other advanced mental states. To the extent that a person develops these higher capabilities, that person gains distinction, and character. But character development, as a body of thought, is well understood. We needn't review it here.