The authors show with some simple training sketches the nature of the diffe
rent stages of phenomenological reduction, These stages are useful for unde
r-standing psychiatric experience. One may encompass this philosophical att
itude by meeting persons with schizophrenia, This meeting is in itself a fo
rm of the intersubjective reduction. It reveals the very essence of subject
ivity, compared to a flash, and schizophrenia as its metamorphosis within t
he living world.