In truth, philosophy is the mode of thought shaped by the most radical form of prejudice: the passion of being-in-the-world. With the sole exception of specialists in the field, virtually everyone senses that anything which offers less than this passion play remains philosophically trivial. Cultural anthropologists suggest the appealing term 'deep play' for the comprehensively absorbing preoccupations of human beings. From the perspective of a theory of the practising life we would add: the deep plays are those which are moved by the heights.