This paper compares Kant’s and Leibniz’s views on the relation between knowing subjects and known objects. Kant discusses Leibniz’s philosophy in the ‘Amphiboly’ section of the first Critique. According to Kant, Leibniz’s main error is mistaking objects in space and time for mind-independent things in themselves, that is, for monads. The paper argues that, pace Kant, Leibniz regards objects in space and time as mind-dependent. A deeper divergence between the two philosophers concerns knowing subjects. For Leibniz, they are substances. For (...) Kant, we cannot know whether they are substances. Kant conceives of knowing subjects as complex systems of cognitive capacities. (shrink)

The first part of the paper offers an historical reconstruction of the relationship between philosophy and neuroscience. The goal of this part is to show that such relationship has been generated on the basis of a theoretical common ground; that this common story was essentially tied to the American philosophical naturalism; that naturalism entails a metaphilosophical constraint, such that between philosophy and the natural sciences subsists a strong cognitive asymmetry. In the second part of the paper, it has been taken (...) into consideration the proposal of a “naturalized epistemology”. On the one hand, it has been examined the historical and theoretical consequences of it. But on the other hand, it is possible to show that in the very same quinean text there are conceptual resources that exceed the cages of reductionisms by restoring a broader and less hierarchical idea of philosophy. The fundamental claim of the work is that only assuming an idea of philosophy not already-naturalized it is possible to match the challenge for a new semantics of concepts brought forward by neurosciences. (shrink)