Google了一下亞裏士多德的這句話，發現了這個link，覺得說得不錯，試著翻譯看看。

"Happiness is the meaning and the purpose of life, the whole aim and end of human existence” - Aristotle
"幸福是生命的意義和目的，是人生活的動力，以及活著，就會一直追求的唯一目標” - 亞裏士多德

http://www.pursuit-of-happiness.org/history-of-happiness/aristotle/  

In conclusion, according to Aristotle, what is happiness?
亞裏士多德對幸福的定義是什麽？

• Happiness is the ultimate end and purpose of human existence.

幸福是人一生至死不渝所追求的生活目標。

• Happiness is not pleasure, nor is it virtue. It is the exercise of virtue.

幸福不是娛樂，也不是美德。它是針對美德的實踐行為。

• Happiness cannot be achieved until the end of one's life. Hence it is a goal and not a temporary state.

人在生命的終止之前，是無法實現幸福的。故此，幸福是一個目標，不是一個暫時狀態。

（我有些不同的想法。人在活著的時候當然可以享受幸福，隻是人不會滿足這短暫的幸福，所以一旦這短暫的幸福淡化掉了，消失了，人就會趕快去尋找下一個幸福點。故此，幸福是人一生至死不渝的追求。）

• Happiness is the perfection of human nature. Since man is a rational animal, human happiness depends on the exercise of his reason.

幸福是人性的完善。由於人是有原因和邏輯的，所以人的幸福取決於這些原因和邏輯而引發的行為結果。

• Happiness depends on acquiring a moral character, where one displays the virtues of courage, generosity, justice, friendship, and citizenship in one's life. These virtues involve striking a balance or "mean" between an excess and a deficiency.

幸福取決於人的一生對其品德的追求，具體表現為勇氣，慷慨，正義，友誼和公民道德，而且我們還需要極為小心地維係這些品德之間的平衡。

• Happiness requires intellectual contemplation, for this is the ultimate realization of our rational capacities.

幸福需要智慧慎思，因為它決定了我們最終能將多少理性潛能轉變為現實。