The treatment of the passions “in particular,” comprising twenty-three Questions, is both more intricate and more extensive than the four Questions on the passions “in general.” Why does Aquinas accord such weight to the particular passions (§5.1)? First among the particular passions is love. In its proper sense, the passion of love is “sensitive love.” Though rational love is more elevated than sensitive love, Aquinas does not hesitate to point out the superior potency of sensitive love in drawing a person nearer to the divine (§5.2). He proceeds to illuminate the nature of love by examining the distinction between “love of friendship” and “love of concupiscence” (§5.3). What causes love? Ultimately, the good, but in order for the good to cause love, it must be cognized in a way that involves some kind of likeness between subject and object (§5.4). What does love do to a person? What are its effects? Aquinas treats this large question by identifying the primary effect of love as “union,” and treating the remaining effects in terms of union (§5.5).