2. In the field of mathematics, the art of asking questions is more important than the art of answering questions. A poet and lead singer

3. No problem can touch people's emotions as deeply as infinity, and few other concepts can stimulate reason to produce rich thoughts as infinity, but no other concepts need to be clarified as infinity. Hilbert (Hilbert)

Mathematics is an infinite science. Herman Weil

5. Problem is the core of mathematics. Halmos

6. As long as a branch of science can raise a large number of questions, it is full of vitality, and no questions indicate the termination or decline of independent development. Hilbert

7. Some beautiful theorems in mathematics have the following characteristics: they are easy to be summarized from facts, but their proofs are extremely hidden. Gauss

1. Be prepared for danger in times of peace, wealth will worry about decline. (Hanshu) 2. I don't know the true face of Lushan Mountain, but I am only on this mountain. 3. don't be happy with things, don't be sad with yourself. 4. Half horse red and full of silk, char to bull's head. Don't be afraid of clouds covering your eyes, just because you are at the highest level. 6. Put pen to paper and shake the wind and rain, and the poem becomes a cry. 7. One day, I will ride the wind and waves, sail straight and cross the deep sea. 8. Those who drag out an ignoble existence have long died. 9. Spring Garden can't be closed. 10. Silkworms in spring will weave until they die, and candles will drain the wick every night. 1 1. Shorter feet and longer inches. 12. I often think of the sunset in Xiting, and I don't know the way back when I am drunk. 13. There is no dye in the mud, and there is no demon in the ripples. 14. Kindness, honesty and evil. 15. Practice a thousand songs to know your bosom friend and watch a thousand swords to know your instrument. 16. A journey of a thousand miles is not far off. 17. On one side of the sinking ship, Qian Fan passed by, and the sick tree led to Wan Muchun. 18. Let's go to Quantai to recruit old employees and behead Yamaraja with 100,000 as the standard. 19. But make Longcheng fly and don't teach Huma to cross Yinshan Mountain. 20. I wish people a long time and a thousand miles together. 2 1. In the fragrance of rice flowers, it is said that the harvest year is good. Listen to the frogs. 22. Reading is like writing a book. 23. The more help you get, the less help you lose. 24. The cold corner has gone, and the mulberry is not too late. 25. many lines of injustice will hang themselves. If you read a book a hundred times, you will understand its meaning. 27. Studying alone without friends is ignorant. 28. When children meet strangers, they will smile and ask where the guests are from. 29. What you hear is not as good as what you see, and what you see is not as good as what you practice. Until dusk, when the snow overwhelmed our tent, our frozen red flag could not fly in the wind. 3 1. 32. Fang Lin's new leaves urge the old leaves, and the waves before the water beat the waves. 33. If you don't learn, you won't learn. 34. Sailing alone in the blue sky, the Yangtze River flows in the sky. 35. If a worker wants to do a good job, he must sharpen his tools first. 36. If you die in troubled times, don't ask Wenda to be a vassal. 37. You can only look at the leopard in the tube. 38. Bow your head a thousand fingers and bow your head as a willing ox. 39. Misfortune depends on happiness, and happiness lies in misfortune. 40. However, as long as China maintains our friendship, heaven will remain our neighbor. 4 1. Like the spring wind, it blows at night and blows open the petals of ten thousand pear trees. 42. The sand sea has deepened unfathomable ice, gloomy clouds and bleak Wan Li condensate. 43. Once you climb to the top of the mountain, you will see that all the other mountains look short under the sky ... 44. Listening is bright, favoritism is dark. I don't feel sorry for myself, but I still want to defend my country. 46. Talented people come forth in large numbers, from generation to generation, each leading the way for hundreds of years. 47. Be quiet to cultivate one's morality, and be frugal to cultivate one's morality. 48. The next day, the lotus leaves were infinitely blue, and the lotus flowers were of different colors. 49. Do your best until you die. 50. If you are near Zhu Zhechi, you will be black, if you are near Mexico.