Abstract
To what extent does the fact that a philosopher, in order to communicate, is constrained to use the same language and the same concepts as other members of his society, inhibit him from developing genuinely original modes of thought? Section I of this paper outlines arguments for the view that any attempt at radical originality, of the kinds traditionally expected of philosophy, must involve misuse of these shared concepts. Section II, however, on the basis of an examination of what it is for different members of a society to use the same concepts, argues that so doing does not rule out important differences over instantiations and logical interrelations. It then attempts to show that this latitude for difference is adequate to allow for certain kinds of philosophical originality, for example, that shown in the Whiteheadian philosophy of organism.