Abstract
Teachers need grounded ethical confidence: an intellectual virtue analogous to courage. I distinguish this from SCAA's notion of teacher confidence, based on the ‘authority of consensus’. Such a notion is challenged by Wittgenstein's later philosophy. I argue that confidence in authority is deferential rather than intellectual, which is not what we want for teachers. As courage (according to Aristotle) is a mean between vices, grounded ethical confidence is a mean between tendencies to excessive and insufficient doubt (forms of ‘not knowing one's way about’ philosophically.) It is the virtue of thinking well ethically, and knowing that one thinks well.