The detailed perfection of his etchings of nature and religious stories is extraordinary.

VOA: special.2009.09.02

For most people, it seems extraordinary because people don' understand the nature of exponential function and therefore don't understand the nature of the power of one.

很多人会觉得不可思议,因为他们不懂指数函数的本质,也不懂“一“的力量。

哈佛公开课 - 幸福课课程节选