1. All self-interested lives are irrational and animal lives. ——Leo Tolstoy

2. Human reason destroys superstition, and human emotions will also destroy egoism. ——Heine

3. Investment must be rational. If you can't understand it, don't do it. ——Warren Buffett

4. Emotions overwhelm reason. This is the reason why evil occurs in the world. ——Greek tragedy writer Euripides

5. In order to maintain the reality of life when writing, Cao Xueqin would rather sacrifice a certain rationality of artistic fiction. ——Liu Xinwu

6. The difference between humans and animals is human reason, and hatred often clouds human reason. ——Former Soviet writer Troye Polsky

7. Reason holds its own principles in one hand, studies and experiments based on that principle in the other, and goes to nature. ——Kant

8. The greatest flatterer is a person's self. Compared with it, other flatterers seem very rational. ——British Renaissance writer and philosopher Bacon

9. Only knowledge is power. Only knowledge can make us love people honestly, respect people's labor, and sincerely appreciate the beauty of uninterrupted great labor. Results; only knowledge can make us become mentally strong, honest and rational people. ——Golky

10. Reason holds its own principles in one hand, studies and experiments based on that principle in the other, and goes to nature. ——Kant

11. The wavering of thought is not a wavering between right and wrong, but a kind of wandering between reason and irrationality. ——Swiss psychologist and psychoanalyst Carl Jung

12. When reason is not on our side, it becomes the ugliest thing in the world in our eyes.

——British politician Halifax

13. My reason has not been trained to bend and fold. All that can do that is my knees. ——Montaigne