再查一下，此言出自（泰伦斯）Publius Terentius Afer (195/185–159 BC).

One famous quotation by Terence reads: "Homo sum, humani nihil a me alienum puto", or "I am a human being, I consider nothing that is human alien to me."This appeared in his play Heauton
(http://en.wikipedia.org/wiki/Terence)

莫非泰伦斯也有私生子？或是泰伦斯的话剧HEAUTON是关于私生子的？

下面这篇介绍马克思主义的文章开篇就提到这句话。

 Terentius’ statement, “I believe that nothing human is alien to me,” was an expression of the Humanist spirit, echoed centuries later by Goethe’s “Man carries within himself not only his individuality but all of humanity, with all its potentialities, although he can realize these potentialities in only a limited way because of the external limitations of his individual existence.”
（http://www.marxists.org/archive/fromm/works/1965/introduction.htm）

谁能从这里读出私生子的话，I　服了　U。