Confucius

The ancient people who desired to have a clear moral harmony in the world would first order their national life; those who desired to order their national life would first regulate their home life; those who desired to regulate their home life would first cultivate their personal lives; those who desired to cultivate their personal lives would first set their hearts right; those who desired to set their hearts right, would first make their wills sincere; those who desired to make their wills sincere would first arrive at understanding; understanding comes from the exploration of the knowledge of things. When the knowledge of things is gained, then understanding is reached; when understanding is reached, then the will is sincere; when the will is sincere, then the heart is set right; when the heart is set right, then the personal life is cultivated; when the personal life is cultivated, then the home life is regulated; when the home life is regulated, then the national life is orderly; and when the national life is orderly, then the world is at peace. From the Emperor down to the common man, the cultivation of the personal life is the foundation of all. It is impossible that when the foundation is disorderly, the superstructure can be orderly. There has never been a tree whose trunk is slender and whose top branches are heavy and strong. There is a cause and a sequence in things, and a beginning and end in human affairs. To know the order of precedence is to have the beginning of wisdom.


Confucius
(qtd. Lin Yutang)(bold mine)