2. Historical writing: This sentence is an important part of Confucius' thought and can be used to describe the influence and contribution of Confucius and his thought.
3. Literary writing: This sentence can be used as a theme or background to describe the image of a virtuous person and explore the relationship between morality and survival.
4. Argumentative writing: This sentence can be used as an argument to support a certain point of view, emphasizing that moral value is higher than survival value.