My favourite  quote from Confusius (Kung Fu-tse):

 The ancients who wished to demonstrate illustrious virtue throughout the kingdom, first ordered well their own states.

 Wishing to order well their own states, they first regulated their families.

 Wishing to regulate their families, they first cultivated their person.

 Wishing to cultivate their person, they first rectified their hearts.

 Wishing to rectify their hearts, they first sought to be sincere in their thoughts.

 Wishing to be sincere in their thoughts, they first extended to their utmost their knowledge.

 Such extension of knowledge lay in the investigation of things

 …

 From the Son of Heaven down to the mass of people, all must consider the cultivation of the person (explanation: The True Self) - the root of everything else.

 The ancient Philosophers of Rome had a similar (not as clear) saying: What is good for the state is good for the individual.

Todde

 Also check: http://axiom1b.blogspot.com/2019/05/common-sense-wisdom-is-common-sense.html