“This clear and concise introduction to key concepts in Stoicism is thoughtful and engaging. It uses texts mostly from Epictetus as each chapter’s starting point, and insightful discussions of well-chosen examples illustrate how Stoics discern the nuances of various practical situations to find a path to a worthwhile life. The authors succeed in making Stoic thinking appeal to a wide audience.”—William O. Stephens, professor emeritus of philosophy at Creighton University and author of Marcus Aurelius: A Guide for the Perplexed and Stoic Ethics: Epictetus and Happiness as Freedom

“An original work of clear and concise explanations of the ‘what’ of Stoic philosophy that also addresses why the Stoics believe what they do. Tanner Campbell and Kai Whiting bring to life both fundamental and more advanced ideas of Stoicism in a readable and relatable style, seamlessly integrating discussions of the Stoic God and universe with lively reflections on what our day-to-day affairs and social lives mean for the Stoics. A book that is as valuable an introduction to Stoic philosophy as it is a refresher.”—Dr. Will Johncock, author of Beyond the Individual: Stoic Philosophy on Community and Connection

“What Is Stoicism? is an excellent introduction and overview of Stoicism, perfect for newcomers as well as those who want a clear and foundational understanding of this thought-provoking philosophy. It’s easy to read, accessible, and engaging while not dumbing down the critical and often misrepresented aspects of Stoicism. Best of all, Tanner Campbell and Kai Whiting apply these important lessons to everyday life, which helps illustrate both the essential concepts and their modern applicability.”—Anya Leonard, founder and director of Classical Wisdom and author of Sappho: The Lost Poetess