1. Defaulting to incompetence undoubtedly creates opportunities for failure. 2. Don’t take small things lightly, and they can become big things later. 3. There are two ways to achieve important goals - power and perseverance. Power is only owned by a few people, but perseverance can be possessed by most people. Its silent power develops over time and becomes irresistible. 4. Napoleon said a famous saying when he suffered a disastrous defeat in Russia: "From the great and the sublime to the ridiculous, there is only one step." 5. The worst thing a ruler can do is be immoral. The upper beam is not straight and the lower beam is crooked. If the ruler is immoral, it will affect the customs and poison the society.