The text is a defence, inspired by Hume, of the naturalisation of moral values, specifically universality and equality. I take Tugendhat’s position on the relationship between persons and moral trials as the starting point for explaining the central problem of naturalisation in morality, which is naturalisation of values. I therefore show that the assumption of an asymmetry between persons and reason in favour of the latter is the characteristic note of the Kantiana tradition, the core of which is an anti-naturalistic theory of value. I then discuss in favour of Hume’s moral naturalism, but I refer to its limitations in clarifying moral distinctions with regard to artificial virtues. Finally, I conclude by presenting a naturalised analysis of universalism and equalitarianism based on the asymmetry between guilt and indignation.