Remember Who Planted the Tree
The most-quoted Vietnamese proverb about gratitude — and it is about labour, not politeness.
When you eat the fruit, remember the one who planted the tree. English reaches for "count your blessings", but that is not the same thought at all. Blessings arrive from nowhere and cost nobody anything. Fruit arrives because somebody put a seed in the ground years before you were hungry, watered it through seasons they might not live to see, and got nothing out of it themselves. The proverb is not asking a child to be polite. It is telling them that the comfortable thing they are holding was paid for in somebody else's ordinary, unglamorous, unwitnessed work — and that the debt is real even though nobody will ever come to collect it.
Ăn quả nhớ kẻ trồng cây. Câu này người Việt nào cũng thuộc, thường dạy trẻ con từ lúc chưa biết chữ. Cái hay của nó là ở chữ "trồng": không phải ai cho mình quả, mà là người đã trồng cây từ nhiều năm trước, tưới qua bao nhiêu mùa, có khi không còn sống để ăn quả ấy. Ơn ở đây là ơn của công sức lặng lẽ, không ai chứng kiến, không ai đòi trả.
A ca dao proverb in ordinary spoken circulation for centuries, with no attributable author — the standard rights position for a saying rather than a song or a story. It is close kin to "uống nước nhớ nguồn", drink the water and remember the source, which carries the same idea through a spring instead of an orchard.
Public domain: Vietnamese oral tradition — a ca dao proverb in common circulation for centuries, no attributable author. Told here in our own words.