Book 15: 《衛靈公》 Wei Ling Gong (Duke Ling of Wey)
《衛靈公》 Passage 15.35
子曰：「民之於仁也，甚於水火。水火，吾見蹈而死者矣，未見蹈仁而死者也。」
Legge Translation (1861)
The Master said: "Virtue is more to man than either water or fire. I have seen men die from treading on water and fire, but I have never seen a man die from treading the course of virtue."