The ego represents what we call reason and sanity, in contrast to the id which contains the passions. The Ego and the Id (1923)
It is easy to see that the ego is that part of the id which has been modified by the direct influence of the external world. The Ego and the Id (1923)
The sexual wishes in regard to the mother become more intense and the father is perceived as an obstacle to the mother; this gives rise to the Oedipus complex. The Ego and the Id (1923)