Commentary on the Letter of Saint Paul to the Romans Quotes

“It should be noted that ignorance excuses from guilt, when it precedes and causes guilt in such a way that the ignorance itself is not the result of guilt; for example, when a person, after exercising due caution, thinks he is striking a foe, when he is really striking his father. But if the ignorance is caused by guilt, it cannot excuse one from a fault that follows. Thus, if a person commits murder, because he is drunk, he is not excused from the guilt, because he sinned by intoxicating himself.”
― Thomas Aquinas, Commentary on the Letter of Saint Paul to the Romans