The history of contractarian moral theory is long and varied. It includes the classic social contract theories of Hobbes (1651), Hume (1739/1740), and Kant (1785) as well as modern versions of these theories, such as those of Gauthier (1986), Scanlon (1998), Darwall (2006), and Southwood (2010). In Minimal Morality: A Multilevel Social Contract Theory (2018), I continue this tradition by developing a ‘multilevel social contract theory’ that combines Humean, Hobbesian, and Kantian moral features. In this article, I reply to comments (...) by Fred D’Agostino, John Thrasher, Christopher W. Morris, and Peter Vanderschraaf. I am deeply grateful for these commentators’ constructive and engaging comments that, in their own way, shed light on core assumptions and features of the theory. Due to space restrictions, I focus on what I consider to be the main criticisms and have organized my responses thematically. I hope that doing so will also help readers who are less familiar with my work to understand the relevance of multilevel social contract theory for morally diverse societies. (shrink)