God causes the movement of the heavens out of love. Nicomachean Ethics is probably the best book written on the subject, in which he discusses virtues as separated into moral and intellectual virtues. Moral virtues are acquired by practice. One becomes virtuous by doing virtuous acts, and ideally will do so willingly. Virtue is a mean between opposite vices, and there are no simple rules to decide what is appropriate.
Intellectual virtue presupposes moral virtue and is divided into practical and theoretical wisdom.
De Anima contains Aristotle's notion of soul and its relation to body. He dismisses the question of whether soul and body form a unity. In the Poetics Aristotle defends poetry against Plato's criticisms. Aristotle regarded the poet's creations as imaginative, ideal truths closer to reality than the records of historiography. He also rejected the view that poetry should be judged by the morality of what it depicts.