A Touch of Doubt traces the theme of touch in the evolution of skepticism through Platonism, German idealism, Continental philosophy and psychoanalysis. Haptic Scepticism, the field of ethics emerging from this study, explores the grasp-ability of contradiction. Contradiction is a haptic marvel. We can cup it in our palms, press it against our lips, dip our toes into its coolness, and, if we are not careful, we may even burn ourselves on its surface.