没有阴影就没有阳光,了解夜晚是必要的。
"There is no sun without shadow, and it is essential to know the night."
真正的艺术家并不骄傲;他知道艺术比他更伟大。
The best mathematics is timeless.
Neither the life of an individual nor the history of a society can be understood without understanding both.
The magical number seven, plus or minus two: some limits on our capacity for processing information.
神奇的数字七,加减二:我们信息处理能力的一些限制。