Power is required for communication. To stand before an indifferent or hostile group and have one's say, or to speak honestly to a friend truths that go deep and hurt — these require self-affirmation, self-assertion, and even at times aggression. … My experience in psychotherapy convinces me that the act which requires the most courage is the simple communication, unpropelled by rage or anger, of one's deepest thoughts to another.

Ch. 12 : Toward New Community - Power and Innocence (1972)