"Personal cultivations begins with poetry, is made firm with rules of decrum and is perfected by music.

Does anybody know where this is from ?

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Jefferson 03-06: Full
P'ai Pan Clapper
China , ca. 1880–1911, Late Qing Dynasty. Wood, cotton.
1900.16.0011

Personal cultivation begins with poetry, is made firm by rules of decorum, and is perfected by music.

—Confucius

In his study, the Confucian scholar may well have had a pair of p'ai pan clappers, two simple pieces of wood used to provide rhythm in dance. Learning to play a musical instrument was an integral part of traditional scholarly training. To the Chinese, music is a language unto itself, one that expresses a person's feelings long after words have become ineffectual. As the Chinese proverb states, “At the end of language is the beginning of music.”
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This is what I found on the net which had the wordings you mentioned.
Maybe someone else could give more details on this.

Ohhh! I knew it but I wasn't sure. Thank you very much.

Glad to have helped.