Book 15: 《衛靈公》 Wei Ling Gong (Duke Ling of Wey)
《衛靈公》 Passage 15.30
子曰：「過而不改，是謂過矣。」
Legge Translation (1861)
The Master said: "To have faults and not to reform them; — this, indeed, should be pronounced having faults."