The controlling rule is: genus expresses shared essential content; differentia expresses essential distinction; proximate and remote specify the level. Relative to human: animal is proximate genus, growing body remote genus, rational proximate differentia, sentient remote differentia. These are categories of a classical logical framework, not claims of modern scientific taxonomy. Next comes relations between universal concepts.
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Lesson summary and transition
Proximate and Remote Genus and Differentia
The controlling rule is: genus expresses shared essential content; differentia expresses essential distinction; proximate and remote specify the level. Relative to human: animal is proximate genus, growing body remote genus, rational proximate differentia, sentient remote differentia. These are categories of a classical logical framework, not claims of modern scientific taxonomy. Next comes relations between universal concepts.