Leibniz’s Thesis on the Best of Possible Worlds

Meaning and Considerations

Abstract

For Leibniz, what makes our world be the best? Several interpretations not always compatible have been proposed. It would be the best, insofar as it would maximize the happiness of reasonable creatures, or insofar as it would achieve the largest quantity of being and reality as a whole, or insofar as it would combine the simplest laws with the richest and most varied phenomena. The aim of this paper is to show that the best is to be understood in the sense of the method de Formis optimis, as what refers, for a given sort of things, to the most determined form, which is both unique and the most rational one. Thus, the perfection of the world does not result from its containing the largest quantity of essence and of good (quantitative perfection), but from its forming the most intelligible order, in which every single thing, without being necessarily the best in itself, nevertheless contributes to the universal harmony, that is to the unity of a manifold fulfilling the divine ends in the best possible way (qualitative perfection).