Evil in misuse…

Food is not evil, but gluttony is. Childbearing is not evil, but fornication is. Money is not evil, but avarice is. Glory is not evil, but vainglory is. Indeed, there is no evil in existing things, but only in their misuse.
–Saint Maximos the Confessor (580-662)

Sloth is not…

Sloth is not just laziness. It is an inability to act for your own spiritual good. That is, knowing what is necessary for the good of your own soul, and not being able, or not being willing, to take the necessary actions.
–Evelyn Waugh (1903-1966)