Friendship with the upright, with the truthful and with the well informed is beneficial. Friendship with those who flatter, with those who are meek and who compromise with principles, and with those who talk cleverly is harmful.
The superior person tries to promote music as a means to the perfection of human culture. When such music prevails, and people's minds are led towards the right ideals and aspirations, we may see the appearance of a great nation.