The alternative way of describing the situation—saying that “I” act differently when in different “moods”—is just a way of evading the question he seems to have been asking: If you have different preferences from one moment to the next, then in what sense is it the same “you” from moment to moment? Isn’t this image of you exchanging one mood for another just a way of covering up the fact that today’s you and tomorrow’s you aren’t really the same you?
