"A wise man asks wise questions, a fool asks foolish questions" means that smart people ask profound questions, while stupid people ask meaningless questions. This means that asking questions is an important learning ability. Wise people challenge their thinking by asking in-depth questions and become smarter, while fools ask meaningless questions, which will only make themselves more clumsy over time.

This sentence comes from Mr. Tao Xingzhi's famous saying: "The starting point for discovering thousands of things is one question. A wise man asks wisely, and a fool asks stupidly." It means that any education method is through Questioning is the starting point of learning, and smart people will ask in-depth questions, while stupid people will ask meaningless questions.

In short, the art of asking questions is crucial to learning and thinking. Wise people guide their thinking and learning through clever questions, while fools may ask meaningless questions, wasting time and energy.