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Chapter Summary

An essence is a genus and a set of differentiae that divide the form of that genus; and the certainty of the formula of that essence, structured as an immediate definition, derives from the unity of the parts of that essence. Aristotle certainly believed that it was possible to formulate “definitions” of many different kinds of things, and believed that those formulations would be useful to particular inquiries in certain circumstances.

Keywords: Aristotle; theory ofdefinition



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