Each of us assimilates into himself something of the values and meanings contained in past experience. But we do so in differing degrees and at differing levels of selfhood. Some things sink deep, others stay on the surface and are easily displaced. The old poets traditionally invoked the muse of Memory as something wholly outside themselves – outside their present conscious selves. The invocation is a tribute to the power of what is most deep-lying and therefore the furthest below consciousness, in determination of the present self and of what it has to say. It is not true that we “forget” or drop into unconsciousness only alien and disagreeable things. It is even more true that the things which we have most completely made a part of ourselves, that we have assimilated to compose our personality and not merely retained as incidents, cease to have a separate conscious existence. Some occasions, be it what it may, stirs the personality that has been thus formed. Then, comes the need for expression. What is expressed will be neither the past events that have exercised their shaping influence nor yet the literal existing occasion. It will be, in the degree of its spontaneity, an intimate union of the features of the present existence with the values that past experience have incorporated in personality. Immediacy and individuality, the traits that mark concrete existence, come from the present occasion; meaning, substance, content, from what is embedded in the self from the past.