The following is what I recommend (you can choose your own):

It is better to seek a teacher than to learn. -----Yang Xiong

The master of sage impermanence. -----Han Yu

It is easy to meet a Confucian teacher, but it is difficult to meet a human teacher. -----Sima Guang

There was no saint king in ancient times who did not respect his teacher. -----Lu Buwei

Teachers are the soul engineers of mankind. -----Stalin

The whole world does not follow the example, so the way will be separated. -----Liu Zongyuan

Scholars must seek teachers, and they must be cautious in following them. -----Cheng Yi

Once a teacher, always a father. ----Guan Hanqing

It is important to learn and have teachers, and it is also important to obtain friends. -----Tang Zhen

In order to learn, there is no greater importance than respecting the teacher. -----Tan Sitong

The ancient scholars must be strict with their teachers, and the teachers will be strict and then the Tao will be respected. -----Ouyang Xiu

There is no high or low, neither long nor short. Where the Tao exists, the teacher exists. -----Han Yu

There must be a teacher among us. Choose the good ones and follow them, and change the bad ones. -----Confucius

People are not born with knowledge. How can anyone be free from confusion? If you are confused and do not follow the teacher, it is confusion, and you will never be able to understand it. -----Han Yu

Everyone I meet is more or less my teacher, because I learn something from them. -----Emerson

Instead of looking for a confused mentor, it is better to go alone, which can save the effort of searching. Anyway, he doesn't know anything. -----Lu Xun

A good student can discover the mistakes of his teacher, but remain respectfully silent, because it is these mistakes that are beneficial to him and enable him to walk on the road. -----Turgenev