Schutz's interest in the problem of intersubjectivity, which can be traced as far back as to his first work not intended for publication, Theorie der Lebensformen, stretches throughout the whole of his life-work.¹ It is clear that unlike in his early work The Phenomenology of the Social World where he left open the possibility of considering intersubjectivity as a transcendental problem in the Husserlian sense, Schutz, in the major portion of his life-work, viewed intersubjectivity exclusively as a mundane problem belonging to the sphere of the natural attitude in which man lives in a world whose existence he simply takes for granted.²