Confucius said, "Knowing is knowing, not knowing is not knowing, but knowing." In other words, whether you are a learned man at all times and in all countries, or a master of combining Chinese and western, there is no end to learning, and there must be knowledge that you have not mastered. This requires us to be modest and eager to learn, and not be ashamed to ask questions. Just like a geography teacher, he is very realistic. If he doesn't know, he just doesn't know. He didn't prevaricate, nor did he force himself to be ignorant and deceive himself. But the courage to know their own shortcomings, determined to study and verify from many aspects, and finally make up for this defect, so that their knowledge by going up one flight of stairs. Teachers' spirit of facing up to problems and being brave in solving problems is a necessary condition for all knowledge development.

We have all read Che Yin's allusions, but how many of us have thought about the effect of her reading? I'm afraid not many people can answer. In fact, some people have done experiments and really read books with fireflies on autumn nights. The result was so bad that they couldn't see clearly, let alone read. However, we don't know that there is an allusion to using fireflies as oil lamps, which has been passed down from generation to generation. It happens that the teacher has been teaching for 30 years and has never realized the difference between big and small yellow croaker, which shows that the discovery of the problem is opportunistic or even accidental, which requires us to seek truth from facts. Once you find a problem, you should face it squarely until you find the answer to it.

Archimedes has been exploring all his life. Even after he became famous, he kept checking and questioning his exploration results. His students asked him, "teacher, you already know more than us." Why should we continue to explore and pursue? " Archimedes drew a big circle and a small circle casually and said, "This big circle is my knowledge range, and the small circle is your knowledge range. The area of the big circle is larger than that of the small circle, so I know more than you. But the outer parts of these two circles are unknown to us. The arc length of the big circle is longer than that of the small circle, so I have more unknown areas than you, which is why I often doubt myself. " Learning the sea is endless, and what we have learned is just a drop in the ocean. If we deceive ourselves and think that we don't know, then all science will have no room for development and creation.

We should face the problem bravely and solve it. Only by facing them bravely can we further improve our knowledge, and only by solving them bravely can we promote social progress and development.

Adopt ~!