【参考译文】Gratitude is the art of gracefully accepting and appreciating every act of kindness, no matter how small. Most of us do not forget to express our pleasure when we receive hospitality, gifts and obvious benefits. But even in this case, we need to be careful and able to express it in a perfect way, making it as personalized and sincere as possible. The art of gratitude should be shown first and foremost in the small things: the bus conductor, the hospital nurse, the waitress at the restaurant, the janitor on campus — all of whom serve us in different ways. By expressing gratitude we can humanize everyday relationships and make some monotonous tasks enjoyable. The gratitude we give can never be too much, because the people around us are motivated by our smiles that form their life pursuit and work.