Life is like a piano. The white keys represent happiness and the black keys show sadness. But as you go through life's journey, remember that the black keys also create music.
经常要坦白地承认一项过失错误,这将使你的上司意料防备不及,才会给你一个机会去犯更多的错误。
The most important thing in mathematics is to ask the right questions.
The most beautiful words in the English language aren't "I love you" but "it's benign."