 The form of atomism that Avicenna rejects is that there exist minimal parts that cannot even be conceptually divided further. These are the minimal parts of Epicurus and the atoms of Kalām. Avicenna’s arguments against this conception of atomism takes two forms: one, arguments showing that there is a physical absurdity with such atoms and, two, arguments showing that this form of atomism is incompatible with our best mathematics, namely, that of Euclidean geometry. The following two examples give one a sense of how Avicenna’s physical-style and mathematical-style criticisms work (Avicenna, [PR], namaṭ 1, ch. 1 and [Ph], 3.4; Lettinck 1988). While all the arguments considered are specifically directed toward a theory of pixilated atomism, they apply equally well to corpuscular atomism. Additionally, Avicenna has a series of arguments, not considered here, showing the absurdities that would follow on the purported motion of corpuscular atoms. 