“it occurs to me that I must not know altogether what I am, either, and that others know certain things about me better than I do, though I think I ought to know all there is to know and I proceed as if I do. Even once I see this, however, I have no choice but to continue to proceed as if I know altogether what I am, though I may also try to guess, from time to time, just what it is that others know that I do not know.”