Fromm-Reichmann described loneliness as “one of the least satisfactorily conceptualized psychological phenomena, not even mentioned in most psychiatric textbooks”—a state in which the “fact that there were people in one’s past life is more or less forgotten, and the possibility that there may be interpersonal relationships in one’s future life is out of the realm of expectation.” Loneliness was such a deep threat, she wrote, that psychiatrists avoided talking about it, because they feared they’d be contaminated by it, too.