This article aims to demonstrate the importance and inevitability of nonscientific issues in psychotherapy and psychopathology by addressing four closely related topics: the presence of a priori factors such as tacit assumptions and narrative foms; the inescapable presence of values; the way in which psychotherapy and psychopathology are partly deflned by, and in turn shape, current societal and cultural outlooks; and the status of clients as agents independent of their status as objects of scientifically based healing. The way in which these facton operate is illustrated in the case of a 45-year-old woman suffering from depression, physical illnesses, and family problems. Implications for quantitative and qualiiathte research are suggested.The present assignment to demonstrate the value of philosophical thinking for clinical psychology and psychotherapy contains the tacit assumption that contemporary clinicians and researchers typically consider scientific modes of thought to be a sufficient frame of reference for their disciplinary activities. It is our intention to challenge the assumption that psychotherapy, psychopathology, and psychodiagnosis can be constituted solely on the knowledge base provided by the "objective" findings of empirical psychology and biology, or can be conceived only as a compendium of "techniques." We do so by addressing