The motives of philosophers tend to be personal. Philosophy has mattered politically as part of continuing political debates. Its effects on politics, religion and the development of the sciences have been evident. Philosophy has been supposed to have special educational value, from its contents or from the benefits of its methods and arguments. This is doubtful. Rather, philosophy matters because its concerns matter. How much philosophy matters, or should matter, may be a question of local taste. (Contains 7 notes.)