Men do not understand books until they have a certain amount of life, or at any rate no man understands a deep book, until he has seen and lived at least part of its contents. ↗
If philosophy is practice, a demand to know the manner in which its history is to be studied is entailed: a theoretical attitude toward it becomes real only in the living appropriation of its contents from the texts. ↗
The contents of the massive banks behind these successive revetments makes it quite clear that the material was derived from the incorporation of earlier occupation levels. ↗