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Proper names vs. “universal names”
Of names, some are proper, and singular to one only thing; as Peter, John, this man, this tree: and some are common to many things; as man, horse, tree; every of which, though but one name, is nevertheless the name of diverse particular things; in respect of all which together, it is called a universal, there being nothing in the world universal but names; for the things named are every one of them individual and singular.
One universal name is imposed on many things for their similitude in some quality, or other accident: and whereas a proper name bringeth to mind one thing only, universals recall any one of those many.
Hobbes, Lev IV 6
The manner how speech serveth to the remembrance of the consequence of causes and effects consisteth in the imposing of names, and the connexion of them.
Hobbes, Lev IV 5