Review article of Martin Lenz, Locke's Sprachkonzeption, Berlin: de Gruyter, 2010.

The European Hobbes Society Online Colloquium featured my book, Potentia: Hobbes and Spinoza on Power and Popular Politics, with critical commentaries from Alissa MacMillan, Chris Holman, and Justin Steinberg. This is my response to their commentaries.

Kant and Medicine - the Philosopher as Anthropologist, Physician and Patient. It remains uncertain whether the student Immanuel Kant (1724-1804) truly wanted to become a physician or only said this in order to please a sponsor. Due to his narrow chest and other typical weaknesses of a scholar he considered himself a hypochondriac and cautiously kept his distance from dangerous illnesses, especially those of the mind. He inspired his students - including Herder, Herz, Lenz and Hoffmann - far less (...) with logic and metaphysics than with exciting findings about far away countries, their alien inhabitants and the health dangers lurking in exotic parts of the world. He called for philosophical treatment of physical illnesses beyond the limited "veterinary" approach of medicine. He claimed the responsibility of the philosophy faculty for forensic questions. Kant developed original ideas about the seat of the soul, which led to the construction of a first model of the brain including functioning synapses. He was unable to overcome reservations about smallpox vaccination because he feared a change in the germ line. He wanted to see "how long the stuff would last" and during his later decades used all the classic dietetics to successfully extend his life. These sex res non-naturales continue to play a significant role in the prevention of widespread diseases today. Then an "electric revolution of the air strata" took its toll on him. Towards the end, his confidants were to look at him like a child, who, however, left posterity an extensive work with deep insights into his thinking, the Opus postumum. (shrink)

Do minds and ideas connect, interact, or even depend on each other, and if so, how exactly do they connect and interact? How should we conceive of the mode and process of minds and ideas being in a network and connected in some way, that is, being intersubjective or social? Martin Lenz's study Socializing Minds convincingly shows that, contrary to widespread opinion in philosophy of mind, at least some early modern philosophers, here Spinoza, Locke, and Hume, actually give a (...) positive answer to the first question and present models that respond to the second question, thus addressing what Lenz proposes calling 'the contact problem' and repudiating the idea that mentalism is necessarily bound to individualism. In this comment, I focus on a detail in Lenz's reconstruction of Spinoza's 'metaphysical model' of the intersubjectivity of minds, namely the Aristotelian physical dynamism that would underlie Spinoza's idea of the interaction of minds. While I agree that Spinoza's model of interaction of minds refers to the Aristotelian conception of motion, I argue that the guiding principle in natural motion is best understood not only in terms of contrariety but also in terms of complementarity. Admittedly, my proposal goes beyond Spinoza's model of ideas in contact, and probably beyond Lenz's interpretation of that model, but it might enrich the imagination of the socialising of minds and ideas from a kinetic point of view, which, at least as I understand it, is precisely what Spinoza and Lenz thrive on. (shrink)