「义理无定在，无穷尽。吾与子言，不可以少有所得，而遂谓止此也。再言之十年、二十年、五十年，未有止也。」
他日，又曰：「圣如尧、舜，然尧、舜之上善无尽；恶如桀、纣，然桀、纣之下恶无尽。使桀、纣未死，恶宁止此乎？使善有尽时，文王何以『望道而未之见』？」
「义理没有固定的所在，也没有穷尽。我同你们讲论，不可以稍有所得，便以为止于此了。再讲十年、二十年、五十年，也没有止境。」
另一天，又说：「圣明如尧舜，然而尧舜之上，善没有尽头；邪恶如桀纣，然而桀纣之下，恶也没有尽头。假使桀纣不死，恶难道止于此吗？假使善有尽头，文王为什么『望见了道却像未曾看见一样』？」
"Righteous principle has no fixed abode and no end. When I speak with you, do not suppose that because you have gained a little, this is all there is. Were we to speak another ten, twenty, fifty years, there would still be no end."
Another day he said: "Sagely as Yao and Shun were, above them goodness has no end; wicked as Jie and Zhou were, below them evil has no end. Had Jie and Zhou not died, would their evil have stopped there? And if goodness could be exhausted, why did King Wen 'gaze on the Way as if he had not yet seen it'?"