This sentence should not be a sentence in a literary classic, but there are similar sentences in the article.

1, "Do what you can, do what you can", the original intention should come from the Great Works of Rites and Music Movement: "If money is evil, it should be abandoned on the ground and not hidden in yourself; You don't have to do it for yourself. People cherish the products of labor, but they are not selfish and will not take them for themselves; People are ashamed of not contributing or contributing less in common labor. They can all work as hard as they can, but they don't get more ideas. "

2. In modern times, when China translated Marxist philosophy, he refined this sentence into a description of the concept of communism, that is, the words "from each according to his ability, to get what he needs", and at the same time proposed that the primary stage of communism was "from each according to his ability, to distribute according to his needs". (At the same time, you can refer to Mr. Yu Guangyuan's article "The Transition from From From Each to Each according to His Needs" in the early 1980s and return to "From Each to His Needs"-one of my suggestions).

3. There are other "variant usages" in life (that is, changing words, but with the same or similar meaning), such as the propaganda manuscript put forward by CCB "Do what you can-share a dream".

For personal understanding only, please correct me if there are exact words in the literature.