John Hughlings Jackson is a major figure at the origins of neurology and neuroscience in Britain. Alongside his contributions to clinical medicine, he left a large corpus of writing on localisation of function in the nervous system and other theoretical topics. In this paper I focus on Jackson’s “doctrine of concomitance”—his parallelist theory of the mind-brain relationship. I argue that the doctrine can be given both an ontological and a causal interpretation, and that the causal aspect of the doctrine is (...) especially significant for Jackson and his contemporaries. I interpret Jackson’s engagement with the metaphysics of mind as an instance of what I call meta-science—the deployment by scientists of metaphysical positions and arguments which help streamline empirical investigations by bracketing off unanswerable questions and focussing attention on matters amenable to the current tools of experimental research. (shrink)

It is common to designate Lamarck and Lamarckism as the main historical references for conceptualizing the relationship between organisms and the environment. The Lamarckian principle of the inheritance of acquired characters is often considered to be the central aspect of the “environmentalism” developed in this lineage, up to recent debates concerning the possible Lamarckian origins of epigenetics. Rather than focusing only on heredity, this article will explore the materialist aspect of the Lamarckian conception of the environment, seeking to highlight that (...) the life-supporting function of physicochemical milieux was its cornerstone. Indeed, compared to the Darwinian conception of the environment, which focuses on interindividual and interspecific relationships in a given habitat, Lamarck’s emphasis on the dependencies of organisms on physicochemical environments appears to have given rise to a very active philosophical environmentalism. Studying the environmental Lamarckism of 19th-century philosophers and social scientists in France, Great Britain, and the United States, such as Comte, Quatrefages, Spencer, and Ward, I propose to analyze their contribution to the conceptualization of the environment. The social, moral, or psychological conceptions of human environments that proliferated in the second half of the 19th century deviated from Lamarck’s more material approach, but they were still referencing Lamarck. Examining the scope of their “Lamarckism,” this article seeks to highlight the common context of life sciences and social philosophy, in which the environment emerged as a central issue in the 19th century. (shrink)

The article revisits the debate between the positivists and non-positivists currents in sociology in the late nineteenth and early twentieth century, concluding that it is actually a false debate, due to the fact that, beyond their differences, both shared some of the basic principles of the paradigm of modernity. From this historical analysis the article seeks to draw lessons for the social sciences in the present, at a time when these seem to have reached a certain synthesis between the modern (...) and postmodern epistemologies. The article shows us that such a synthesis was already prefigured in the writing of classical theorists as it is, in fact, an ineluctable structural law of science itself if it wants to escape from the trap of skepticism and epistemological nihilism. The article also explores how, as a consequence of the pervasiveness of the modern paradigm, a common ethnocentric bias can be traced in all the fathers of sociology and wonders whether sociology today has actually got rid of this problem. (shrink)