上句见：Day354
The Story of Philosophy《哲学的故事》第1章Plato第7节VI. The Psychological Solution第5段第1句：

Music is valuable not only because it brings refinement of feeling and character, but also because it preserves and restores health. There are some diseases which can be treated only through the mind (Charades,157): so the Corybantic priest treated hysterical women with wild pipe music, which excited them to dance and dance till they fell to the ground exhausted, and went to sleep; when they awoke they were cured. The unconscious sources of human thought are touched and soothed by such methods; and it is in these substrata of behavior and feeling that genius sinks its roots. "No man when conscious attains to true or inspired intuition, but rather when the power of intellect is fettered in sleep or by disease dementia"; the prophet (manlike) or genius is akin to the madman (manic) (Phadrus, 244).
浙江大学译本：音乐是宝贵的，因为它不仅为人类带来感情和性格的升华，更有助于保持和恢复人体的健康。

解析

1、Music is valuable not only because it brings refinement of feeling and character, but also because it preserves and restores health.
音乐之所以珍贵，不仅是因为它使情感和性格得到陶冶及提升，还因为它能维持和恢复健康。

上段讲音乐可以塑造性格，使国家不是仅有武夫，是由集绅士与勇气于一体的公民。这段进一步说明音乐还有其中功能，有助于健康，使无病的保持，使有病的恢复。