What do you understand from the paradoxical fable?

I understand that you should think twice before you speak, and you should not contradict yourself.

There can be no indestructible shield and spear in the world. The Chu people unilaterally exaggerated the role of spears and shields, resulting in a situation that could not be justified. Metaphor is inconsistent in speaking and doing things, and it is impossible to justify itself.

It is impossible for a person to make diametrically opposite judgments on the same question in the same judgment. If you do this, you will make a logical mistake. Contradiction is a universal form of things, and there is contradiction in everything, whether it is the objective world of matter,

Or the subjective world of thinking, with contradictions. Contradiction is not necessarily a bad thing. Only when there are contradictions can things progress and develop. The key is to understand contradictions, analyze contradictions, study contradictions and solve contradictions. Only in this way can things develop.

Extended data:

It belongs to Han Feizi. It's about a Chu man who sells both spears and shields. He says that his shield is strong and can't pierce any spear, and that his spear is sharp and can pierce any shield.

When a bystander asks, "What will happen if you stab your shield with your spear?" , this person was speechless. Later, he acted according to the description or acted differently from his words and deeds. It also refers to a disjointed character or mood. Later, because the metaphor of human language action conflicts before and after, it does not correspond.

Baidu encyclopedia-contradiction