The history of philosophy must identify in each system the determining motifs, the genuine crystallizations present throughout the entire system, and separate them from proofs, justifications, and dialogues, from their presentations by philosophers, to the degree that the latter were conscious of them. It must separate the silently advancing mole of genuine philosophical knowledge from the wordy, exoteric, phenomenological, multiformed consciousness of the subject, that consciousness which is the receptacle and motivating force of these reasonings.