He lived at a little distance from his body, regarding his own acts with doubtful side-glances. He had an odd autobiographical habit which led him to compose in his mind from time to time a short sentence about himself containing a subject in the third person and a verb in the past tense.
If he had smiled why would he have smiled? To reflect that each one who enters imagines himself to be the first to enter whereas he is always the last term of a preceding series even if the first term of a succeeding one, each imagining himself to be first, last, only and alone whereas he is neither first nor last nor only nor alone in a series originating in and repeated to infinity.