I will therefore rise above that natural capacity in a step by step ascent to him who made me. I come to the fields and vast palaces of memory,12 where are the treasuries of innumerable images of all kinds of objects brought in by sense-perception. Hidden there is whatever we think about, a process which may increase or diminish or in some way alter the deliverance of the senses and whatever else has been deposited and placed on reserve and has not been swallowed up and buried in oblivion.