This volume gathers together new essays on deception and self-deception by leading thinkers on the subject. The contributors discuss topics including the nature and the definition of deception; whether deception is morally blameworthy or not; attacks against and defenses of self-deception; and the most famous philosophical account of lying by Immanuel Kant. Deception of others and self-deception share many more interconnections than is normally recognized, and these essays reveal the benefits of considering them together. he Philosophy of Deceptionill be of interest to philosophers across the spectrum including those interested in philosophy of mind, philosophy of psychology, and metaphysics.