Hold firmly that our faith is identical with that of the ancients. Deny this, and you dissolve the unity of the Church.
Thomas AquinasDevotion is a certain act of the will by which man gives himself promptly to divine service.
Thomas AquinasIt is clear that he does not pray, who, far from uplifting himself to God, requires that God shall lower Himself to him, and who resorts to prayer not to stir the man in us to will what God wills, but only to persuade God to will what the man in us wills.
Thomas AquinasGood and evil are essential differences of the act of the will. For good and evil pertain essentially to the will; just as truth and falsehood pertain to the reason, the act of which is distinguished essentially by the difference of truth and falsehood (according as we say that an opinion is true or false.) Consequently, good and evil volition are acts differing in species.
Thomas Aquinas