The last Fifty years have witnessed the rediscovery of Adam Smith’s moral philosophy and an increasing exploration of his conception of himself as a moral philosopher. Recent scholarship has dwelt on the eclectic nature of this thinking. Scholars have suggested that Smith draws on and combines elements drawn from across the ancient and modern schools of philosophy, and that the moral philosophy of the Scottish Enlightenment is characterised by an awareness of and response to the fact of moral pluralism. This leaves open the possibility that different modes of moral thinking can issue in incommensurable conclusions: that in some cases there might be no way to decide what is the ‘right’ thing to do. I explore the implications of these readings for Smith’s understanding of the role of philosophy in moral decision-making and, more particularly, what this means for teaching moral philosophy. Smith saw philosophy as a specific and limited activity that formed but a small part of the moral life of the individual. Moreover, Smith cautioned against over-ambition in philosophical thinking and warned of the intellectual, social, and political dangers of too much philosophy.