Answer the contradiction sentences in classical Chinese accurately! !

The contradictory sentences are as follows:

The Chu people/those with shields and spears praised/said, "My shield is strong, and things can't sink." He also praised his spear/said, "The benefits of my spear are all in things." Or: "What if the child's spear gets stuck in the child's shield?" He/she can respond. Husbands/indestructible shields/and indestructible spears cannot stand side by side with the world.

meaning

This idiom shows the thinking contradiction of Confucian scholars who "confuse law with literature". There can be no unbreakable shield and invincible spear in the world. The Chu people unilaterally exaggerated the role of spears and shields, resulting in a situation that could not be justified. Contradictory stories warn people to seek truth from facts, be appropriate, and never be philistine, exaggerated or boastful. The businessman boasted and contradicted himself. As a result, he made a joke and broke his word. This dishonest attitude is not desirable.

This idiom also tells people to seek truth from facts when speaking and doing things, and think twice before acting. Speak or do things consistently, so as not to be unable to justify yourself and be asked to be speechless.