This concept was first raised by Yan Hui（521-481 BC）, one of Confucius' (551-479 BC) disciples. He provided a subjective source for benevolence. According to the Confucian School, a man of benevolence is sure to cherish himself and then extend his love to others. In return, he is sure to win love from others. This is reciprocal. Many people advocated this concept since then, though they might not necessarily belong to the Confucian School. The essential idea is that one should not be selfish but should have self-respect and be self-reliant, doing his best to serve the people and the country.