The Visionary, Psychiatry and Society Vaughan Bell Visionary Mode Symposium Cardiff, 16th / 17th September 2003 Participants were asked to produce an 800 word 'statement of interest' on which to base an introductory talk to introduce a session of the symposium. This is an abstracted version. The definitions of belief and delusion are by no means built on solid foundations, with serious problems of definitions in each. Religious beliefs and experiences are one area which is particularly troublesome for psychiatry. The DSM diagnostic criteria for a belief to be diagnosed as a delusion has a particular exemption for religious beliefs, although no rationale is given. Presumably an expedient measure to prevent the majority of the world from being diagnosed as psychotic. However, we have almost a reverse problem for the question of how society should value the beliefs and experiences from people already diagnosed as delusional or mentally ill. During or after mental illness some people may come to believe that they are an important religious figure (for example, Jesus Christ). Yet society regards their views as worthless because they are marginalised, despite the fact they often communicate a message of goodwill to others and have many sensible things to say about how we should relate to the world. Similarly, any hint of a scientific explanation for spiritual experience (particularly of key religious figures) has followers up in arms, with the implicit assumption that such an explanation automatically devalues the experience and the teachings therein. Recently, our research group has been working with people who do not become marginalised, despite having intense or frequent anomalous experiences. Many of the new or re-emerging religious movements attract individuals whose personal experiences cannot be comfortably included within mainstream religion and yet who are rarely distressed by their experiences. These various examples beg questions about the validity of our taxonomy (both medical and religious) of anomalous experience and how society values the visionary person.