I have been busy wresting some information out of my self—about its essence, identity, properties, and modes—for the past thirty-some years. The few things that I have learned hardly make me knowledgeable about the subject, which seems to be elusive as well as intriguing. Even so, a little structured knowledge is not so bad as a lot of scattered ignorance, and giving structure to things that one learns can always pave the way to further wisdom. A great deal of the little that I know about the subject is garnered through pondering the...