If you're not making mistakes, you're not trying hard enough.
如果你没有犯错,说明你不够努力。
理解一个问题就是答案的一半。
数学的本质在于它的自由。
If winning becomes too important in a game, change the rules to make it more fun. Changing rules can become the new game.
可持续发展不仅是一种趋势,更是一种责任。
底层是城市与建筑相遇的地方——这是最重要的楼层。