Abstract

New natural lawyers--notably Grisez, Finnis, and George--have written much on civil marriage's moral boundaries and grounds, but with slight influence. The peripheral place of the new natural law theory (NNLT) results from the marital grounds they suggest and the exclusionary moral conclusions they draw from them. However, I argue a more authentic and attractive NNLT account of marriage is recoverable through overlooked resources within the theory itself: friendship and moral self-constitution. This reconstructed account allows us to identify the relation between marriage and human flourishing and the morality of same-sex marriage without making marriage infinitely plastic.