From the Analects of Confucius governing politics. Confucius described his learning and cultivation process like this. This process is a process of gradually improving the ideological realm with the growth of age. As far as the ideological realm is concerned, the whole process is divided into three stages: the age of fifteen to forty is the stage of learning and understanding; Fifty or sixty years old is the stage of peace of mind and stability, that is, the stage of being unaffected by the environment; Seventy years old is the stage of integration of subject consciousness and life rules. At this stage, moral cultivation has reached the highest level. There are reasonable factors in Confucius' moral cultivation. First, he saw that people's moral cultivation can not be completed overnight, nor can it be completed overnight. It takes a long time to study and exercise, and there should be a gradual process. Second, the highest state of morality is the unity of thought, words and deeds, and consciously abide by moral norms, not reluctantly. "Knowing destiny" means that when you can objectively understand the poverty and communication in your destiny, the good and bad in the world, you can understand and grasp it, deal with it calmly, don't blame others, and don't be moved by external things. "