 In the introduction to the sixth edition of Ross’s Aristotle, J. L. Ackrill remarks Ross ‘made his mark in public life and as a university teacher and administrator, and he wrote influential books on ethics. But it is as the leading Aristotelian of the first half of the century that he will be most remembered’ (AT ix). There is certainly no denying Ross was one of the most influential Aristotelians of the twentieth century. Although some of Ross’s translations of Aristotle now have formidable competitors, they are still held in high regard. His editions of Aristotle’s texts with commentaries continue to be an important source for scholars working in ancient philosophy. This should not, however, lead to overlooking Ross’s impact on moral philosophy. Although Ross received rather short shrift from moral philosophers in the last century (e.g., Raphael 1981; Rawls 1971; Warnock 1960 ), his ethical outlook is now considered a serious contender and in recent years many of Ross’s moral and meta-ethical doctrines have received sustained attention and (in some cases) defence (see, e.g., Audi 1996, 2004; Dancy 2004; Gaut 2002; Hurka 2004, 2014; McNaughton 1988, 1996; Parfit 2011; Phillips 2019; Shaver 2007, 2014; Stratton-Lake 2002a, 2002b, 2011a, 2011b). It is reasonable, then, to say Ross will be remembered for his work in ancient philosophy and his work in moral philosophy.