BION: In psychoanalysis, when approaching the unconscious— that is, what we do not know— we, patient and analyst alike, are certain to be disturbed. In every consulting-room, there ought to be two rather frightened people: the patient and the psychoanalyst. If they are not both frightened, one wonders why they are bothering to find out what everyone knows.
Bion, Wilfred R. (2005-06-09). The Tavistock Seminars (Kindle Locations 1706-1708). Karnac Books. Kindle Edition.