The Ego and the IdSigmund FreudBuy on AmazonAppears in 7 ideasEpistemology/Philosophy of MindMindWhat is the mind, how does it know, and how is it related to the body?Metaphysics/PsychologySoulIs the soul immortal, and what is the relationship between mind and body?Metaphysics/EthicsManWhat kind of being is man, and how does he differ from all other creatures?EthicsDesireWhat is the nature of desire, and should reason rule it or learn from it?EmotionWhat are the passions, and what role should they play in the life of the soul?EpistemologyWillIs the will free, and if so, what is the nature of its freedom?Memory and ImaginationHow do memory and imagination extend experience beyond the present, and what do they reveal about the mind?