The roots of education are bitter, but the fruit is sweet.
教育的根是苦的，但其果实是甜的。
The best designs come from understanding the problem deeply and then finding the simplest solution.
我从不回头看，我总是向前看。
（一味追求智巧）对上而言遮蔽了日月的光辉，对下而言消蚀了山川的精华，对中间而言毁坏了四时的交替，就连地上的爬虫，空中的飞蛾，都会失去它们的本性。
The system produces needs faster than it can satisfy them.
