Sloth refers not only to “a certain weariness of work” but also to “a sluggishness of the mind which neglects to begin good.” This is why Aquinas defined sloth as “sorrow for spiritual good.”3 It is a mortal sin in “robbing us of our appetite for God, our zest for God, our interest and enjoyment in God. Sloth stops us from seeking God, and that means we do not find him.”
