John Macmurray was a Scot who fought in World War I and subsequently became a philosopher and broadcaster. In his Gifford Lectures he set out to challenge certain presuppositions in traditional thinking on the nature of the self, which have led to its being regarded as pure subject, as opposed to the world as object. In this second volume of those lectures, he attempts to show that the form of the personal life is determined by the mutuality of personal relationships, so that the unit of human life is not the I alone, but the You and I.