Boss, through his studies with Heidegger, found that modern medicine and psychology, including psychoanalysis and Binswanger's form of Daseinsanlysis made incorrect assumptions on what it means to be human. For Boss and Heidegger, mental illness was not caused by an alternation of a patient's lived experience, but rather a conflict between themselves and the meaning of life and their purpose, or Dasein. Boss felt that psychology had moved away from religion and God. If a patient were to understand and accept religion and God as the answer to their conflict, they would resolve the conflict and the illness would vanish.
