DEFINITION OF QUANTITY.
11. Let us now pass to quantity and quantitatives. When treating of quantity, we have already said that it consists in number and dimension, in so far as some thing possesses such a quantity, that is, in the number of material things, and in the extension of the subject.[380] Here indeed we are not treating of abstract quantity, but of a quantity which causes a piece of wood to measure three feet, or that horses are five in number. Consequently, as we have said, we should call extension and number (considered from the concrete viewpoint) "quantitatives"; but this name could could be applied neither to time nor space; time, being the measure of movement,[381] re-enters into relation; and place, being that which contains the body,[382] consists of a manner of being, and consequently, in a relation. (So much the less should we call time and place "quantitatives," as) movement, though continuous, does not either belong to the genus of quantity.