Commit a crime, and the earth is made of glass. Some damning circumstance always transpires.

(Ralph Waldo Emerson: Emerson's Essays, first series, “Compensation”, 1841)

Jung was always very well aware of the danger of mental contagion; of the adverse effect that one personality might have upon another…Anyone who has practised psychotherapy with psychotics will confirm that delusional systems, and other features of the psychotic's world, are indeed contagious and may have a very disturbing effect upon the mind of the therapist.

(Anthony Storr: Jung – Ch. 2)