 Pomponazzi reaffirmed his views about the mortality of the soul in his lectures on De generatione et corruptione given in 1522 (Nardi 1965: 251–68). His lectures on De partibus animalium display his skepticism toward complete human knowledge of the natural world (see Perfetti 1999). This skepticism expressed in the biological works also appears in his lectures on Aristotle’s Meteorologica, in which he puts forward doubts about knowledge of the final causes of disasters and the certainty of a number of meteorological explanations (see Martin 2011: 30–33, 44–50). In these lectures he followed several teachings of On Incantations, affirming the place of prodigies in the ordering of the universe and the stars’ role in causing sublunary change (see Graiff 1976).