I have a little shadow that goes in and out with me, And what can be the use of him is more than I can see.

I have a little shadow that goes in and out with me, And what can be the use of him is more than I can see.

我有一个小小的影子跟着我进进出出，他有什么用呢?

-- Robert Louis Stevenson 罗伯特·路易斯·史蒂文森