The opening line of
徐志摩《再别康桥》 (Xu Zhimo, Second Farewell to Cambridge, 1928):
轻轻的我走了,
正如我轻轻的来 (Softly I am leaving, just as softly I came). Written on a steamship returning to China after Xu revisited King's College, Cambridge, where he had studied 1921-22. Paired with the closing stanza
悄悄的我走了...
不带走一片云彩, it bookends the most famous short poem in modern Chinese literature.