Rationality and emotion are two footprints in human life, and every growth of human beings on the road of cognition is related to their rationality and personal feelings.

Cognitive things, of course, must have strict rationality, can't indulge their feelings and likes and dislikes. If you draw conclusions only by the closeness of feelings, you will get wrong judgments in most cases. Just like the rich man in Song Dynasty in Han Feizi, his son said the same thing as the old man said, but the closeness of his feelings reached different conclusions. This is of course unreasonable. Another example is "Zou Ji satirizes Chu Huaiwang, the king of Qi". Zou Ji's wife treats him privately, and Ji is afraid of him. The guests want his things and say that he is more beautiful than Xu Gong in the north of the city. Zou Ji finally ruled out the interference of emotional factors and realized the truth of governing the country and calming the world.

"Disasters often add up, and wisdom and courage are often trapped in drowning." Because of drowning, likes and dislikes, and close feelings, people are easy to get lost when they know things. At this time, only the fire of reason can illuminate the ignorant, dark and turbid world, and mankind must go higher and farther. The reasonable reason is a reliable ladder. When Bruno was burned to death in the flower square, didn't the cheering crowd think they were the masters of truth? But Bruno believes in reason, the "inner teacher", who wants to let "invincible arguments burst out", pierce the fog of habit and emotional dependence, and put human beings on the right track on the road of cognitive things.

Rationality is indispensable in understanding things, but can emotional factors be completely ruled out? Does emotion always play a negative role in the cognitive process?

When Kant looked up at the starry sky, his heart was filled with lofty feelings. It is with this feeling of being close to eternity and truth that he can keep moving forward on the road of knowing the other side. Without emotion, human life will be rigid and abstract. We should not only distinguish right from wrong, but also know beauty and ugliness. Without emotion, how can art exist? There are only cold legal provisions, what can and cannot be done, and all the familiar warmth is far away from us. Can we say that we know the true nature of the world? What's the fun of life? Even the great physicist Einstein attached great importance to the role of emotion in cognition. When someone put forward an idea to him, he didn't judge right or wrong, but said, "Oh, how ugly!" " He doesn't want to spend time on ugly things. In his eyes, ugliness doesn't even hold water in physics.

So when we know things, we should look on coldly and be enthusiastic. Although it can't be judged by the intimacy of feelings, it can't just be a "digital life". Under the guidance of reason and emotion, balance and lyre, we can "live poetically".