In this chapter, I identify a distinctive use of ‘sublime’ in Adam Smith’s philosophy of science. I show that for Smith a scientific discipline and its theories can be sublime. I trace this idea back to Malebranche. I show that in Smith it is a way to convey something about the irrational nature of the natural order lurking behind’s science’s intellectual achievements. In section 1, I diagnose and distinguish three uses of ‘sublime’ in Smith. I situate two of these in (...) the early modern discussions of the sublime in the wake of Boileau's and William Smith’s translations of Longinus. 1 I argue that the third in which Smith treats intellectual disciplines as themselves sublime is relatively distinctive, although not wholly unique to Smith. In section 2, I put this notion in context and trace it, somewhat speculatively, back to the reception of Isaac Newton by Smith and Smith’s reading of Malebranche. In the third section I conclude with some reflections on the significance of this discussion for Smith’s conception of the nature of scientific rationality. (shrink)