Muhammad, the founder of Islam, said, "If you have two loaves of bread, you must exchange one for a daffodil." Everyone has his own daffodil in his heart. Therefore, we can always have plenty of food and clothing, and then exchange a piece of bread for spiritual food. So is life. A person's life needs both material foundation and spiritual foundation, and the spiritual realm is equally indispensable. Spirit refers to a pursuit expressed in people's inner world. On the premise of material foundation, spiritual pursuit is undoubtedly what we should do further. What is the significance of spiritual pursuit? Why pursue spiritual realm? A person who has no spiritual pursuit is undoubtedly flawed. In ancient times, Kuang Heng dug a wall to borrow light to study. His family is poor, but he is eager to know knowledge. Even under such difficult conditions, he persevered and finally achieved a great cause. On the contrary, in ancient times, many people made waves by power, doing nothing and being at a loss every day. No matter how much treasure there is, they are still humble. Spiritual pursuit is not so easy to obtain, and people's ideal pursuit will not occur in an instant. But if they have a firm belief all their lives, they must make unremitting efforts, otherwise they will be a body without soul, and even a beautiful appearance will only be a treasure. Spiritual pursuit and material pursuit are complementary. Material pursuit is the foundation, and spiritual pursuit is sublimation. Of course, there are also many great mathematicians and scientists who forget to eat and sleep for their work. These are not worth advocating, but examples like Chen's study of mathematics can still reflect the importance of spiritual pursuit. Material lack is physical pain, while spiritual lack is spiritual emptiness. Food will be digested after eating, and the spiritual world will extend and accumulate indefinitely like a ladder. This is also the difference when they interact. Then, we must first find the "daffodil" of the soul, which is like a goal, like a bud in bud, and then carefully cultivate it, moisten it and let it grow. In this process, we can constantly repair and adjust. To experience life, to study, to enrich the soul, so that "daffodils" are more full until they bloom. Until then, all the efforts will not be in vain. When you have a "daffodil" in your heart, when there is a green and yellow daffodil in your heart, please pay a piece to let the ideal "daffodil" bloom in your heart. It will accompany you all your life, never wither, always fresh and charming, nourish your heart and fill the hole in your heart, which takes longer than a piece of bread.