 The premise of Pomponazzi’s arguments coincides with his understanding of causation presented in On Incantations. The work also reaffirms the limitations placed on the human intellect in On the Immortality of the Soul. In On Fate, Pomponazzi argued that God, as efficient cause of the world, acts on the sublunary world using the celestial bodies. God is the principal cause, and the celestial bodies are the instrumental cause of accidental effects in the sublunary world, which Alexander and Thomas Aquinas viewed as contingent and without a cause (1.7.II/15). The celestial bodies’ motion, contiguous to the lower world, drives and determines alterations on earth. Therefore, accidental effects, ultimately resulting from God acting as an efficient cause, occur by necessity (1.7.II/16). Pomponazzi maintained that they are mistakenly called contingent as a result of human ignorance of causes and future events but not from any irregularity in matter, natural powers, or celestial influences. Rather, all accidental effects and what appears to result from luck or chance can be traced back to fixed causes (1.7.II/23–26).