Who knows a sentence in the ancient Chinese text Spear and Shield?

There are people in Chu who sell shields and spears. They praise them by saying: "My shield is so strong that nothing can trap it." They also praise their spears by saying: "My spear is so sharp that it can trap everything. ." Or, "How about using Zi's spear and trapping Zi's shield?" This person can't respond. A shield that cannot be broken and a spear that cannot be broken cannot exist in the same world.

The seller cannot respond.

But what can Zhongni’s saint Yao do! The sage knows clearly and is in a superior position, so that the world will be free from treachery. Today there is no fighting over farming and fishing, and the pottery is not rusty. How could Shun be so virtuous? If Shun failed to rescue him, it was Yao who failed. The virtuous Shun eliminated Yao's insight, and the sage Yao eliminated Shun's virtue. You cannot have both. The Chu people who had spears and spears praised them and said: "My spears are so strong that nothing can sink them." They also praised their spears and said: "My spears are so sharp that they can sink everything." Or they said: "Because of the sharpness of my spears, everything can sink." How can a son's spear be trapped in the frame of a son? Nowadays, Yao and Shun cannot be praised equally, which is also the saying of spears and pillars.

The person cannot answer.