This paper situates Hume's views on animals in the context of the Scottish Enlightenment by contrasting them with the views of Adam Smith. While Smith is more central to the philosophical establishment of the Scottish Enlightenment, their views on morals resemble each other greatly and both think that the analogies between humans and non-human animals are useful for thinking about morals. Their estimation of the nature and extent of those analogies, however, differ widely from one another. This has been historically (...) obscured by the fact that in no single work does Smith precisely detail what he thinks non-human animals are capable of. I argue that Smith thinks non-human animal minds are different in kind from human minds. This is evident from Smith's view of how language facilitates and co-creates certain aspects of human cognition. Hume, by contrast, seems to hold that non-human animal minds differ merely by degree from human minds. After reconstructing Smith's view, I contrast it with Hume's, providing historical context to show how Hume falls outside the mainstream on this issue and Smith within it. Their views on animals reflect, broadly, their standing with respect to the wider Scottish philosophical community. (shrink)

We read Adam Smith's Theory of Moral Sentiments as a critical response to David Hume's moral theory. While both share a commitment to moral sentimentalism, they propose different ways of meeting its main challenge, that is, explaining how judgments informed by (partial) sentiments can nevertheless have a justified claim to general authority. This difference is particularly manifest in their respective accounts of ‘moral optics’, or the way they rely on the analogy between perceptual and moral judgments. According to Hume, making (...) perceptual and moral judgments requires focusing on frequently co-occurring impressions (perceptions of objects or reactive sentiments) for tracking an existing object with its perceptual properties or an agent's character traits. Smith uses visual perception for the purpose of illustrating one source of the partiality of the sentiments people feel in response to actions. Before making a moral judgment, people have to disregard this partiality and accept that they are all equally important. Smith and Hume's different ways of relying on the same analogy reveals the still-overlooked and yet profound differences between their moral theories. (shrink)