What you get on paper is so shallow that you never know what you have to do. -Excerpted from Lu You's Reading on a Winter Night for Children.
Lu You's godson poem, entitled Reading on a Winter Night, was written at the end of the fifth year of Qingyuan (A.D. 1 199).
The poet talked about his views on knowledge acquisition from two aspects: one is to spend effort, and the other is to "practice". The ideas expressed in the poem are not only the experience of reading on a winter night, but also the summary of the poet's diligent study.