许多人害怕改变,但是如果把它视作天经地义的事,也就释然了。
Most people are afraid of change,but if you look at it as something you can count on,then it can be a comfort.There's not many things you can really count on.
The real voyage of discovery consists not in seeking new landscapes, but in having new eyes.
数学是一种思维方式,而不仅仅是一堆事实。
过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。