Thomas Reid draws a distinction between the social and solitary operations of mind—acts of mind that require other intelligent beings versus those that may performed on one’s own. Yet his distinction obscures the irreducibly social character of the solitary operations. This paper preserves Reid’s distinction while accommodating the social character of the solitary operations. According to Reid, the solitary operations presuppose the social operations, expressed in what he calls the ‘natural language’ of mankind—a language that communicates the intentions that give (...) rise to the agreements by which the conventions of artificial languages are developed. Using artificial languages, we begin to sort the world into kinds and to anticipate the regular events that make a practical difference in our lives, providing the general conceptions that give our trains of thought the order and regularity required to form the solitary operations. By using artificial languages, we adapt social operations to solitary ends, to think alone and in silence. (shrink)

This article begins by examining James Beattie's conception of speculative ethics, which he regards as the study of the foundation and nature of virtue. This leads to a discussion of the moral sense, or conscience, which Beattie claims is part of the nature of every rational being and which is designed to lead us to a virtuous life. Given this, I ask why Beattie thought himself warranted, or even needed, to dispense practical ethical advice. Answering this involves looking at Beattie's (...) views on the importance of proper education, as well as the role played by his acceptance of providential naturalism. Beattie's answer is not only consistent with his ‘lecturing others’ as to their practical duties, his understanding of the relation between the speculative and the practical also allows him to respond to what contemporary ethicists call the Application Problem. A comparison with Reid's ethical thought will help bring out this latter point. (shrink)

Thomas Reid often seems distant from other Scottish Enlightenment figures. While Hume, Hutcheson, Kames, and Smith wrestled with the nature of social progress, Reid was busy with natural philosophy and epistemology, stubbornly loyal to traditional religion and ethics, and out of touch with the heart of his own intellectual world. Or was he? I contend that Reid not only engaged the Scottish Enlightenment's concern for improvement, but, as a leading interpreter of Isaac Newton and Francis Bacon, he also developed a (...) scheme to explain the progress of human knowledge. Pulling thoughts from across Reid's corpus, I identify four key features that Reid uses to distinguish mature sciences from prescientific arts and inquiries. Then, I compare and contrast this scheme with that of Thomas Kuhn in order to highlight the plausibility and originality of Reid's work. (shrink)