People think for the sake of learning, and they have to go all the way up, which is what the ancients called "looking at the sages and sighing." Those who are above the law can get it, and those who are above the law can get it. Thinking, so unified audio-visual words and deeds; Those who learn know the ambition of the world, and the general rules can be pushed and practiced for a long time.
The great purpose of "thinking clearly" lies in this. Scholars are good at thinking, being kind and acting.