Why did you not say to him, ‘He is simply a man, who in his eager pursuit of knowledge forgets his food, who in the joy of its attainment forgets his sorrows, and who does not perceive that old age is coming on?’
女奚不曰，其为人也，发愤忘食，乐以忘忧，不知老之将至云尔。
Source: The Analects, Shu Er VII, Chapter 19
Author: Confucius
