(From Fodor N. (1950) “Freud: Dictionary of Psychoanalysis”)

Unconscious

“… we call ‘unconscious’ any mental process the existence of which we are obliged to assume … but of which we are not directly aware …”

Id

“It contains everything that is inherited, that is present at birth, that is fixed in the constitution— above all, therefore, the instincts, which originate in the somatic organization and which find their mental expression in the id in forms unknown to us.”

Ego

“We recognize in a man a physical organization which is interpolated between his sensory stimuli and perception of his bodily needs on the one hand, and his motor activity on the other …”

Super-Ego

“The Super-Ego holds a special position between the Ego and the Id. It belongs to the Ego, shares its high psychological organization, but stands in an especially intimate connection with the Id.”

Oedipus complex

“… so named because its essential substance is found in the Greek myth of King Oedipus … killed his father and married his mother …”

Repression

“The essence of repression lies simply in the function of rejecting and keeping something out of consciousness.”