Though Confucius served the Duke of Lu, a Chinese state, he made many enemies with the nobles of the land. His views antagonized the powerful nobles, who wanted the Duke to be a puppet in their hands. Confucius was exiled from the State of Lu for more than two decades. He lived in the countryside, spreading his teachings.
Tzu Chang asked Confucius about jen. Confucius said, "If you can practice these five things with all the people, you can be called jen." Tzu Chang asked what they were. Confucius said, "Courtesy, generosity, honesty, persistence, and kindness. If you are courteous, you will not be disrespected; if you are generous, you will gain everything. If you are honest, people will rely on you. If you are persistent you will get results. If you are kind, you can employ people.
To study and constantly, is this not a pleasure? To have friends come from far away places, is this not a joy? If people do not recognize your worth, but this does not worry you, are you not a true gentleman?
To know, is to know that you know nothing. That is the meaning of true knowledge. When you say something, say what you know. When you don't know something, say you don't know. That is knowledge.
He who remembers from day to day what he has yet to learn, and from month to month what he has learned already, may be said to have a love of learning.