Abstract

There is a great deal in Man Machine and Other Writings that will delight the reader. Thomson has managed to capture much of La Mettrie’s wit and poetic use of language, which is no easy task; as La Mettrie himself comments on his “figurative style,” it “is often necessary in order to express better what is felt and to add grace to truth itself”. The central thesis of Man Machine needs little introduction. Inspired by the suggestion in Part 5 of Descartes’s Discourse on Method that animals are machines, La Mettrie extends the metaphor to man. Man is like a watch whose springs and wheels, properly organized, move to perform its function. But before the reader concludes that La Mettrie is embracing Descartes’s reduction of biological phenomena to “lifeless” mechanism, La Mettrie further claims that matter itself cannot tell time. Only a body appropriately organized can have the property of self-motion, and, hence, perform such functions as telling time, or feeling, or thinking. La Mettrie’s primary task is to vitalize Cartesian mechanism to show that self-directed motion could be a property of organized matter: “I believe thought to be so little incompatible with organized matter that it seems to be one of its properties, like electricity, motive power, impenetrability, extension, etc.”. As for how inert, simple matter becomes active and composed of organs, and, in some cases, endowed with feeling and thought, La Mettrie appeals to our ignorance of causes which prevents us from knowing ultimate beginnings or ends. Such ignorance, however, does not prevent us from admitting such “incontrovertible observations” as that organized matter possesses a motive principle, whereas unorganized matter does not. Other themes in the work include his account of the faculty of imagination as the origin of thought, observations in comparative psychology, a sketch of thinking as a symbolic process, and a discussion of whether apes could speak. Man Machine, as Thomson explains in the introduction, is not a formal treatise, but, rather, a loosely structured polemic, often given to rhetorical flourishes. However, where Man Machine falls short on argumentation it will surely provoke and engage the reader.