There must be a reason why he can be called a famous saying, that is, what he said is very reasonable and helpful to us, that is, it can help us avoid many mistakes or guide you how to do things. His language can stand the test of time, just like many famous sayings and Analects of Confucius, it is still of great help or promotion to us now.
So we regard him as a famous saying, which is actually said by a celebrity, but to be a celebrity, what he said must be reasonable and helpful to mankind. These two celebrities and famous sayings are interrelated.