11. How far love for friends may go.
12. Wrong never to be done at a friend's request.
13. Theories that degrade friendship
14. How friendships are formed.
15. Friendlessness wretched.
16. The limits of friendship.
17. In what sense and to what degree friends are united. How friends are to be chosen and tested.
18. The qualities to be sought in a friend.
19. Old friends not to be forsaken for new.
20. The duties of friendship between persons differing in ability, rank, or position.