THERE IS NO CONTRARY FOR PLACE.
For space, there is no contrary, because strictly space does not belong to the genus of quantity. Even if space were part of quantity, "high" would not be the contrary of anything unless the universe contained also "low." The terms high and low, applied to parts, signify only higher and lower than something else. It is so also with right and left, which are relatives.
CLASSIFICATION OF SYLLABLES AND SPEECH.
Syllables and speech are quantitatives; they might be subjects in respect to quantity, but only so by accident. Indeed, the voice, by itself, is a movement,[386] it must therefore be reduced to movement and action.
DISCRETE QUANTITY QUITE DISTINCT FROM CONTINUOUS QUANTITY.
13. We have already explained that discrete quantity is clearly distinguished from continuous quantity, both by its own definition, and the general definition (for quantity).[387] We may add that numbers are distinguished from each other by being even and odd. If besides there be other differences amidst the even and odd numbers, these differences will have to be referred to the objects in which are the numbers, or to the numbers composed of unities, and not any more to those which exist in sense-beings. If reason separate sense-things from the numbers they contain, nothing hinders us then from attributing to these numbers the same differences (as to the numbers composed of unities).[388]
ELEMENTS OF CONTINUOUS QUANTITY.
What distinctions are admitted by continuous quantity? There is the line, the surface, and the solid; for extension may exist in one, two or three dimensions (and thus count the numerical elements of continuous size) instead of establishing species.[389] In numbers thus considered as anterior or posterior to each other, there is nothing in common, which would constitute a genus. Likewise in the first, second and third increases (of a line, surface, and solid) there is nothing in common; but as far as quantity is found, there is also equality (and inequality), although there be no extension which is quantitative more than any other.[390] However, one may have dimensions greater than another. It is therefore only in so far as they are all numbers, that numbers can have anything in common. Perhaps, indeed, it is not the monad that begets the pair, nor the pair that begets the triad, but it may be the same principle which begets all the numbers. If numbers be not derivative, but exist by themselves, we may, at least within our own thought, consider them as begotten (or, derivative). We conceive of the smaller number as the anterior, the greater as posterior. But numbers, as such, may all be reduced to unity.
STUDY OF GEOMETRICAL FIGURES.
The method of classification adopted for numbers may be applied to sizes, and thus distinguish the line, the surface, and the solid or body, because those are sizes which form different species. If besides each of these species were to be divided, lines might be subdivided into straight, curved and spiral; surfaces into straight and curved; solids into round or polyhedral bodies. Further, as geometers do, may come the triangle, the quadrilateral, and others.