Abstract

The present text aims to make an examination of the varieties of moral naturalism, and for this it will examine some anti-naturalist and anti-realist arguments. It will also argue that existent theories can be considered on two dimensions, the metaphysical and epistemological dimension, and the dimension of motivation and normativity. In the first dimension, there is non-reductive naturalism and reductive naturalism of the non-analytic variety. Turning to the second dimension, the dimension of normativity and moral motivation, we find internalist naturalism, simple externalist naturalism and externalist naturalism with the standard-based account of normativity. At the end, the text will say something in favor of moral realism and to a kind of naturalism in specific. Key words: moral naturalism, normativity, moral realism, moral non-realism.