One of the major embarrassments of man as reflective being is that he does not clearly grasp what he is. The situation is peculiar on the face of it, for it would appear that a being who both is and has the power to know would be in an especially good position to apprehend its own nature. The question of man is an old one and it has been posed in more ways than one. At its most profound, it points to the problem of man's place in the total scheme of things and his final destiny. In less comprehensive and more immediate form, the question of man concerns what we mean when we say "I" and "me." How comes it that each one of us so often uses these terms and yet all are forced to confess that if we seem clear enough about who we mean, we are not very sure about what we mean?