Full Idea
If the King has a great fondness for music, then perhaps there is hope for the state of Ch'i.
Gist of Idea
If the King likes music then there is hope for the state
Source
Mengzi (Mencius) (The Mengzi (Mencius) [c.332 BCE], 1.B.1)
Book Reference
Mencius: 'Mencius', ed/tr. Lau,D.C. [Penguin 1970], p.60
A Reaction
This seems to be Shakespeare's attitude to music as well. The general idea must be that love of music requires a selfless state of mind, where the mind revels in the beauty of something outside of itself. Respect is the desirable result.