Academic freedom is the soul of the university, a place for advanced studies of knowledge and the quest for truth.

作为研究高深学问、探求真理的场所，学术自由是大学的灵魂。

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For freedom is the very soul of art.

因为自由便是艺术的灵魂。

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Besides, the kite is the soul of the book. The kite contains a wealth of imagery such as love, friendship, freedom and hope for the future.

风筝是该书的灵魂，它蕴含了丰富的意象，风筝可以是爱情、亲情、友情，更是作者对未来希望的象征。

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So, get on board the love train (or, Amtrak) for a peek into the freedom loving, musical soul of Philadelphia.

BBC: Philadelphia��s musical roots