 Broad discusses the topic of free will in his inaugural lecture “Determinism, Indeterminism, and Libertarianism” (1934). In this rather dense lecture he approaches the issue by associating free will with moral responsibility. More specifically, he frames it in terms of the conditions necessary and sufficient for the applicability of ‘ought’ and ‘ought not’ to actions. Everyone admits, he says, that there is some sense of ‘could’ in which ‘ought’ and ‘ought not’ entail ‘could’. The question revolves around the sense of ‘could’ involved here: in precisely what sense of ‘could’ is it that if you to ought to perform an action you could perform that action?