"Not to pluck a single hair to benefit the world" comes from Mencius, "Jinxin I." The original text reads, "Yangzi chose egoism; if plucking a single hair from his body would benefit the world, he would not do it." This is Mencius's summary of Yang Zhu's extreme egoism. Its literal meaning is: even if plucking a single fine hair from one's body could benefit the world, Yang Zhu would still be unwilling to do it. Its deeper meaning refers to extreme selfishness, being utterly unwilling to sacrifice one's personal interests for others or the collective, and even flatly refusing to make the most trivial contribution. This idiom is often used to criticize those who haggle over every ounce, are unwilling to give up even a single hair, and lack public spirit and a sense of social responsibility. In terms of cultural background, it reflects Yang Zhu's philosophical position during the Warring States period of "valuing oneself" and "cherishing one's own life," forming a sharp contrast with the Mohist doctrine of "universal love." Its emotional coloring is strongly derogatory, carrying a tone of sarcasm and criticism. It is mostly used in written language or formal argument, describing someone who is extremely stingy and selfish and unwilling to pay any price for the public interest.
📝 Example
1. His attitude of being unwilling to lift a finger even if it would benefit the whole world made his colleagues reluctant to work with him. (Describing extreme selfishness, unwilling to make even the smallest contribution)
2. In the face of the community fundraising, he was surprisingly unwilling to lift a finger even if it would benefit the whole world, which was truly disheartening. (Referring to being unwilling to give even a single hair, refusing to contribute anything to public welfare)