Sebuah neurosis transferensi sesuai dengan konflik antara ego dan id, neurosis narsistik sesuai dengan antara ego dan super-ego, dan psikosis antara ego dan dunia luar. Asli: A transference neurosis corresponds to a conflict between ego and id, a narcissistic neurosis corresponds to that between between ego and super-ego, and a psychosis to that between ego and outer world.

— Sigmund Freud