THIS MIRACLE IS EXPLAINED BY THE USE OF THE CONCEPTION OF POTENTIALITY.
It may be objected that in science a part is not the total science. Doubtless, the notion which is actualized, and which is studied to the exclusion of others, because there is special need of it, is only partially an actualization. Nevertheless, in a latent manner it potentially comprises all the other notions it implies. Thus, all the notions are contained in each part of the science, and in this respect each part is the total science; for what is only partially actualized (potentially) comprises all the notions of science. Each notion that one wishes to render explicit is at one's disposition; and this in every part of the science that is considered; but if it be compared with the whole science, it seems to be there only potentially. It must not, however, be thought that the particular notion does not contain anything of the other notions; in this case, there would be nothing systematic or scientific about it; it would be nothing more than a sterile conception. Being a really scientific notion, it potentially contains all the notions of the science; and the genuine scientist knows how to discover all its notions in a single one, and how to develop its consequences. The geometrical expert shows in his demonstrations how each theorem contains all the preceding ones, to which he harks back by analysis, and how each theorem leads to all the following ones, by deduction.