Abstract
The value of Leibniz’s thought to us today must lie primarily in his metaphysical system and the help it can give us in our own metaphysical puzzlings. Such not merely historical interest it can only have for those of us who still regard metaphysics as a viable enterprise. Thus some discussion of the past and future of the metaphysical enterprise may provide a useful background for the studies of Leibniz’s thought in the other contributions to this issue of The Monist. Moreover, it is what is called speculative metaphysics which must be defended, not merely descriptive metaphysics, for Leibniz was certainly not merely describing our normal conceptual scheme.