Adler departed from Freud because he understood the inadequacies of a system that bases the development of human life on sexuality alone: he means to reintegrate sexuality into the total personality; while for Freud all behavior is driven by desire, that is, by seeking pleasure, Adler sees man as aiming at certain goals; he replaces drives with motives, finality, and plans; he raises intelligence to such heights that for him sexuality often has only symbolic value.