Thomas Aquinas devotes a small section of his magnum opus, the Summa Theologica, to the question of whether military command is a form of moral prudence, concluding it is. Military command may resemble art, and it requires fortitude, but the exercise of command calls for prudence, which is unique among the Aristotelian virtues as cataloged by Aquinas in that it is both moral and intellectual. For the soldier, moral prudence involves a balancing act of ends and means, a golden mean of victory and its cost.