 It is here that Crathorn begins to move us out of our skeptical position, by putting limits on God’s power to deceive. First, he shows us cases in which God’s power cannot extend to the logically contradictory: even God, Crathorn says, cannot make a stone think. Second, he agrees with Scotus that seeming claims (e.g., ‘I feel hot’) and standard self-evident propositions (e.g., ‘the whole is greater than its part’) cannot be doubted. Furthermore, he follows Augustine in arguing that this inference cannot be doubted: ‘I doubt that I exist; therefore, I exist’.