Abstract
There is a theological puzzle concerning the way in which Satan – an angel – was able to sin, despite lacking knowledge of no relevant fact about the world. Anselm and Aquinas explain Satan’s sin as malicious in virtue of Satan’s indifference to what mattered. I appeal to their account of Satan’s sin as a paradigm case clarifying the way in which those who intentionally engage in nonconsensual sex are always acting maliciously. Assuming competence, those who engage in nonconsensual sex fail to attend to what matters and are willing to harm others merely for their own gratification. Such attitudes are diabolical.