Donald Robertson is a writer and psychotherapist who has spent much of his career studying the overlap between ancient Stoic philosophy and modern cognitive behavioral therapy. He is a founding figure in the modern Stoicism movement and has been involved in organizing Stoic Week, an annual event that invites people to try living by Stoic principles for a short stretch of time. Beyond How to Think Like a Roman Emperor," he has written other books connecting Stoic thought to mental resilience and emotional health, drawing on his clinical background as much as his historical research. His work generally aims at the same target this book hits, taking philosophy that's over two thousand years old and showing that it still holds up as a practical guide for handling a difficult life.