The doctor should be opaque to his patients and, like a mirror, should show them nothing but what is shown to him.
The ego represents what may be called reason and common sense, in contrast to the id, which contains the passions.
The individual does actually carry on a double existence: one designed to serve his own purposes and another as a link in a chain, in which he serves against, or at any rate without, any volition of his own.
A certain degree of neurosis is of inestimable value as a drive, especially to a psychologist.
The dream shows how recollections of one's everyday life can be worked into a structure where one person can be substituted for another, where unacknowledged feelings like envy and guilt can find expression, where ideas can be linked by verbal similarities, and where the laws of logic can be suspended.
It goes without saying that a civilization which leaves so large a number of its participants unsatisfied and drives them into revolt neither has nor deserves the prospect of a lasting existence.