 Oresme then asserted that the ratio of any two celestial motions is probably incommensurable (Grant 1971, 67–77). This excludes precise predictions of successively repeating conjunctions, oppositions, and other astronomical aspects, and he subsequently claimed, in Ad pauca respicientes (its name derives from the opening sentence “Concerning some matters …”), that astrology was thereby refuted (Grant 1966, 83–111). In his Livre de divinacions and his Tractatus contra astronomos Oresme tries to show that astrology is “most dangerous to those of high estate, such as princes and lords to whom appertains the government of the commonwealth” (Coopland 1952, 51). As with astrology, he fought against the widespread belief in occult and “marvelous” phenomena by explaining them in terms of natural causes. Oresme’s writings against astrology and magic were due to his concern over the king’s and his court’s addiction to these practices. Interestingly, in the first redaction of his Questions on Meteorology Oresme does not yet turn out to be the resolute opponent of astrology as we know him from his later works, but, quite the contrary, adheres to its principles (Panzica 2021, 2).