  Thus Anselm takes it to be obvious that freedom is a power for something: its purpose is to preserve rectitude of will for its own sake. God and the good angels cannot sin, but they are still free, because they can (and do) preserve rectitude of will for its own sake. In fact, they are freer than those who can sin: “someone who has what is fitting and expedient in such a way that he cannot lose it is freer than someone who has it in such a way that he can lose it and be seduced into what is unfitting and inexpedient” (DLA 1). It obviously follows, as Anselm points out, that freedom of choice neither is nor entails the power to sin; God and the good angels have freedom of choice, but they are incapable of sinning. 