alia forma, sicut cum albedo et nigredo admiscentur, fiunt ex eis multi colores medii." 322 Lucian Petrescu Since we have already stated that some things exist potentially while others exist actually, we see that, as far as the actual state of the miscibles at the time of their mixture is concerned, the resultant from their mixture is other than what they were before they were mixed; and as far as their potential state is concerned, each of them remains just as it was before they were mixed. (1958, 62) However, Averroes's claim that one and the same form can undergo a category change from accident to substance and back remains highly problematic. The Latins criticized heavily this ontological creativity; they will never admit that substantial forms can undergovariation. Medieval Latin authors rejected the opinions of both Avicenna and Averroes unanimously. But the Arab account endured not only as a heterodox opinion against which most of the Latins could develop their variation of hylomorphism: it also gave the fundamental causal understanding of the combination of elements through the remission of their qualities. The remission (and intention) of accidental forms or qualities is an issue that is much debated in both Ancient and Latin philosophy, with a known momentum in the fourteenth century. But the discussion on the intension and remission of forms in Latin philosophy-whether the variation happens in the quality itself (Henry of Ghent) or in the subject sustaining the quality (Thomas Aquinas), whether variation happens at all, or what happens is a succession of