Lord Henry Home Kames, Elements of Criticism, Volume III
“ If in viewing an object, we can abstract from some of its parts or properties, and attach ourselves to others; there must be the same facility, when we recall this object to the{403} mind in idea. This leads directly to the definition of an abstract idea, viz. “A partial view of a complex object, limited to one or more of the component parts or properties, laying aside or abstracting from others.” A word that denotes an abstract idea, is called an abstract term.40. The power of abstraction is bestowed upon man, for the purposes solely of reasoning. ”
