Kant's Metaphysical Foundations of Natural Science is one of the most difficult but also most important of Kant's works. Published in 1786 between the first and second editions of the Critique of Pure Reason, the Metaphysical Foundations occupies a central place in the development of Kant's philosophy, but has so far attracted relatively little attention compared with other works of Kant's critical period. Michael Friedman's book develops a new and complete reading of this work and reconstructs Kant's main argument clearly (...) and in great detail, explaining its relationship to both Newton's Principia and eighteenth-century scientific thinkers such as Euler and Lambert. By situating Kant's text relative to his pre-critical writings on metaphysics and natural philosophy and, in particular, to the changes Kant made in the second edition of the Critique, Friedman articulates a radically new perspective on the meaning and development of the critical philosophy as a whole. (shrink)

The distinction at the heart of Kant's philosophy is a metaphysical distinction: things in themselves are substances, bearers of intrinsic properties; phenomena are relational properties of substances. Kant says that things as we know them are composed "entirely of relations", by which he means forces. Kant's claim that we have no knowledge of things in themselves is not idealism, but humility: we have no knowledge of the intrinsic properties of substances. Kant has an empiricist starting-point. Human beings are receptive creatures. (...) We must be affected by the things of which we come to have knowledge. Kant believes that humility follows from this fact of receptivity. Humility does follow from receptivity, once a further premise is supplied. Kant believes that relational properties, causal powers in particular, are not reducible to intrinsic properties, and that intrinsic properties are therefore causally inert. Receptivity implies that we can have knowledge only of what can affect us. Irreducibility implies, in Kant's view, that intrinsic properties cannot affect us. Humility follows from these. This interpretation finds support in a range of critical and pre-critical writings, but there is a special focus on an early anti-Leibnizian argument for irreducibility that has considerable philosophical merit. One advantage of this interpretation is that the following famous contradiction is dissolved: things in themselves exist, and are the causes of phenomena, and we have no knowledge of them as they are in themselves. Moreover Kant's scientific realism, surprising on an idealist interpretation, makes sense. It does not conflict with Kant's claim that he makes all the qualities secondary--he means that he makes them powers, or in Locke's terms, tertiary qualities. Kant's "primary"/secondary quality distinction is superior to widely accepted alternatives, and his application of the irreducibility argument to the primary qualities challenges some current orthodoxies. Kant's commitment to the unobservables of science is permitted by his understanding of receptivity: we can have knowledge of anything that can affect us. Kant's scientific realism, and his humility, thus have a common source. (shrink)

This book reconstructs, both from the historical and theoretical points of view, Leibniz's geometrical studies, focusing in particular on the research Leibniz ...

Daniel Garber presents a study of Leibniz's conception of the physical world, elucidating his puzzling metaphysics of monads, mind-like simple substances.

The contributions in this part of the present issue mainly originate from the Carnap Lectures 2011 in Bochum where Prof. Tim Crane (Cambridge, UK) and Prof. Katalin Farkas (Budapest) presented keynote lectures under the heading “The Boundaries of the Mental”. The full workshop program is available on our website: http://www.ruhr-uni-bochum.de/philosophy/carnap2011/index.html.