Jacob Viner introduced the term ‘sub-rational’ to characterize the faculties – human instinct, sentiment and intuition – that fall between animal instinct and full-blown reason. The Scots considered sympathy both an affective and a physiological link between mind and body, and by natural history, they traced the most foundational societal institutions – language and law, money and property – to a sub-rational origin. Their ‘social evolutionism’ anticipated Darwin's ‘dangerous idea’ that humans differ from the lower animals only in degree, not (...) in kind. Darwin had the ability to ‘trade places in the imagination’, as Adam Smith would say, with plants and animals, and ‘think’ as they do. The trend today is to ‘positivize,’ ‘behaviorize’ and otherwise reduce the sub-rational to the purely biological. My suggestion is that we trade places in the imagination with the Scottish moral scientists and Darwin, and try thinking as they did. (shrink)

This article examines the history of two fields of enquiry in late eighteenth- and early nineteenth-century Scotland: the rise and fall of the common sense school of philosophy and phrenology as presented in the works of George Combe. Although many previous historians have construed these histories as separate, indeed sometimes incommensurate, I propose that their paths were intertwined to a greater extent than has previously been given credit. The philosophy of common sense was a response to problems raised by Enlightenment (...) thinkers, particularly David Hume, and spurred a theory of the mind and its mode of study. In order to succeed, or even to be considered a rival of these established understandings, phrenologists adapted their arguments for the sake of engaging in philosophical dispute. I argue that this debate contributed to the relative success of these groups: phrenology as a well-known historical subject, common sense now largely forgotten. Moreover, this history seeks to question the place of phrenology within the sciences of mind in nineteenth-century Britain. (shrink)