This article discusses Leibniz’s claim that every substance is endowed with the property of perception in connection with Platonism, rationalism and the problem of substance monism. It is argued that Leibniz’s ascription of perception to every substance relies on his Platonic conception of finite things as imitations of God, in whom there is ‘infinite perception’. Leibniz’s Platonism, however, goes beyond the notion of imitation, including also the emanative causal relation and the logical (i.e. definitional) priority of the absolute over the (...) limited. It is proposed that Leibniz’s endorsement of Platonism, in conjunction with some rationalist elements of his philosophy, implies a monistic conception of particulars as modifications of a single substance. Following some scholars and opposing others, the article offers evidence that Leibniz accepted this implication during the last years of his Paris period. However, it is further argued that it was precisely the idea of perception as a property of every substance that allowed Leibniz to find a way out of monism after that period. More specifically, the article defends the view that what made room for ontological pluralism within Leibniz’s rationalist and Platonic outlook was the idea that perception is the property which constitutes the very being of substances: substances are their perceptions. (shrink)

Discussions of Leibniz’s view of the relation between God and nature in 1675–1676 has split commentators into two competing camps. According to some scholars, Leibniz was a pantheistic substance monist in these years. However, other scholars think that he was neither a substance monist nor a pantheist. This paper advocates a middle ground between these two interpretations. With scholars in the first camp, it is argued that Leibniz was a substance monist in 1675–1676. However, it is also argued that he (...) was not a pantheistic substance monist, but rather a panentheistic one. This interpretation has at least a twofold virtue vis-à-vis the anti-monistic and pantheistic readings. For one thing, unlike the anti-monistic reading, the panentheistic interpretation is in keeping with the weight of textual evidence, which strongly indicates that in 1675–1676 Leibniz did embrace, and actually argue for, the idea that God is the only substance. For another, unlike the pantheist interpretation, it can accommodate the fact that, while endorsing monism in 1675–1676, Leibniz at the same time rejected necessitarianism. (shrink)