Faced with troubling professional decisions in his long and successful career as a psychiatrist, M. O'C. Drury turned for direction to the philosophical work of his teacher and friend, Ludwig Wittgenstein. Of particular concern to Drury were the situations in which psychiatrists were expected to differentiate between instances of madness that were religious in form and instances of genuine religious experience that, for their oddity, landed believers in psychiatric consulting rooms. In this essay we consider the special orientation Wittgenstein's philosophy (...) gave Drury, for example the way in which Drury came to understand how even his search for a principle of differentiation between madness and religion was misleading and contrary to his own practice—how it involved ‘sitting back in a cool hour and attempting to solve this problem as a pure piece of theory. To be the detached, wise, external critic’ and not see himself and his own manner of life ‘as intimately involved in the settlement of this question.’. (shrink)