"The Master said: "A young man should serve his parents at home and be respectful to elders outside his home. He should be earnest and truthful, loving all, but become intimate with his innate good-heartedness. After doing this, if he has energy to spare, he can study literature and the arts.""
Excerpts from the Analects, East Asia, ca 450-500 BC
Which belief system is this excerpt of?