from the Analects of Confucius: "Confucius said: learn from the times, isn't it?" Is it not delightful to have friends coming from distant quarters? Isn't it a gentleman to be ignorant and not satisfied? "

Interpretation: Confucius said, "Isn't it a pleasure to study and review frequently? Isn't it happy to have like-minded friends coming from afar? Others don't understand me, but I don't resent it. Isn't it also a morally cultivated person? "

usage: this sentence is often used to welcome friends who come from afar.