The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

【原文】司马牛忧曰：“人皆有兄弟，我独亡。”子夏曰：“商闻之矣：‘死生有命，富贵在天’。君子敬而无失，与人恭而有礼。四海之内，皆兄弟也。君子何患乎无兄弟也?”【译文】司马牛忧伤地说：“别人都有兄弟，唯独我没有。”子夏说：“我听说过：‘死生命中注定，富贵由天安排。’君子(只要)敬业而不犯错误，对人恭敬而有礼貌。四海之内都是兄弟呀。君子担心什么没有兄弟呢?”

进步主要取决于人类本性中最强大而不仅仅是最高尚的力量能否被用于增加善。

The best advice I can give anybody is to stay humble and work hard.

Stay true to yourself and never let anyone dull your sparkle.

通货膨胀无论何时何地都是一种货币现象。