35. Man has two faculties: will and understanding. When the understanding is governed by the will they together constitute one mind, and thus one life, for then what the man wills and does he also thinks and intends. But when the understanding is at variance with the will (as with those who say they have faith, and yet live in contradiction to faith), then the one mind is divided into two, one of which desires to exalt itself into heaven, while the other tends toward hell; and since the will is the doer in every act, the whole man would plunge headlong into hell if it were not that the Lord has mercy on him.