Analects 18.4-5 · WEI TSZE
The people of Ch'i sent to Lu a present of female musicians, which Chi Hwan received, and for three days no court was held. Confucius took his departure. The madman of Ch'u, Chieh-yu, passed by Confucius, singing and saying, 'O FANG! O FANG! How is your virtue degenerated! As to the past, reproof is useless; but the future may still be provided against. Give up your vain pursuit. Give up your vain pursuit. Peril awaits those who now engage in affairs of government.' Confucius alighted and wished to converse with him, but Chieh-yu hastened away, so that he could not talk with him.