"In writing this rigorous and spirited apology for the claim that God must do the best, Daeley has breathed new life into the philosophical doctrine of optimism. This book is a must-read for philosophers of religion." -- Lloyd Strickland, Professor of Philosophy, Manchester Metropolitan University, UK "Theistic Optimism - the view that God must do the best - is out of favor among contemporary analytic philosophers of religion. Justin Daeley offers a lively, comprehensive, and persuasive defense of Theistic Optimism, appealing to both contemporary and historical sources and contributing original arguments to an age-old debate." -- Katherin Rogers, Professor of Philosophy, University of Delaware, USA "Justin Daeley offers a systematic exegesis and defence of the Leibnizian view that God must do the best. Along the way, he engages with many important related topics in philosophy and theology. Specialists and non-specialists alike will find much of interest here." -- Klaas J.

Kraay, Professor of Philosophy, Ryerson University, Canada.