Mere Goodness is the fifth book contained in the ebook Rationality: From AI to Zombies, by Eliezer Yudkowsky. It focuses on the relationship between moral theory and moral practice.

Mere Goodness contains three sequences of essays, along with the stand-alone essay Twelve Virtues of Rationality. These are all collected in the Rationality: From AI to Zombies ebook, but the essay names below are also linked to the original blog posts.