Book 15: 《衛靈公》 Wei Ling Gong (Duke Ling of Wey)
《衛靈公》 Passage 15.19
子曰：「君子病無能焉，不病人之不己知也。」
Legge Translation (1861)
The Master said: "The superior man is distressed by his want of ability. He is not distressed by men's not knowing him."