The second conference of a three-stage conference series organised by the Centre d’Histoire des Sciences et des Philosophies Arabes et Médiévales took place in Paris on 29 February exploring the relationship between Ibn Sīnā and Muslim rational theology, under the title “Avicenna and the Kalam II: Natural Philosophy and the Theory of Knowledge”. The event featured a lecture by István Lánczky on “Avicenna and the Bahshamites on Spatial Extension”.