An nada shi Farfesa Lucasian na ilimin lissafi a 1669, bisa ga shawarar Barrow. A wannan lokacin, duk wani ɗan kwaleji a Cambridge ko Oxford ya buƙaci ya ɗauki alƙawari mai tsarki kuma ya zama firist Anglican. Koyaya, sharuɗɗan farfesa na Lucasian ya buƙaci cewa mai riƙewa kada ya kasance mai aiki a cikin coci <unk> wataƙila don samun ƙarin lokaci don kimiyya. Newton ya yi jayayya cewa wannan ya kamata ya cire shi daga buƙatar alƙawari, kuma Charles II, wanda aka buƙaci izininsa, ya yarda da wannan hujja. Ta haka ne aka kauce wa rikici tsakanin ra'ayoyin addinin Newton da koyarwar Anglican. Tambaya: Waɗanne kwalejoji aka umurce su da su ɗauki alƙawari mai tsarki?
Cambridge ko kuma Oxford