 Since Kidd (1978), Letters 94 and 95 have been read with a view to the question of whether rules figure in Stoic ethics (for a discussion of the letters that is not framed by this question, see I. Hadot 1969, 8–9). This question, in turn, is relevant to our interpretation of the Stoic conception of law. The Stoics have long been considered the ancestors of the natural law tradition (Striker 1987). If the Stoics formulate rule-like precepts, then perhaps this means that the law, as the Stoics understand it, consists of a set of laws.