Michael Fagenblat's A Covenant of Creatures is a bold and powerful book. Given the nuanced nature of its arguments, no sooner did I think I captured his thought than I discovered that Fagenblat might also have made the opposite point. Nonetheless, a central line of argument does run through the book. My task will be to present it and also to challenge it. The best tribute to this fine work is to engage in vigorous debate about its claims.