Even the devil, having lost the knowledge of God, and so inevitably becoming ignorant in his ingratitude and pride, cannot of himself know what to do. On the contrary, he sees what God does to save us and maliciously learns from this and contrives similar things for our destruction. For he hates God and, being unable to fight Him directly, he fights against us who are in God’s image, thinking to avenge himself on God in this way.”
St. Peter of Damaskos