—— 请按键盘 空白键 开始游戏 ——

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is a finite problem.
用程序证明四色定理不会改变数学——它只是证明了这个挑战了一个世纪的定理是一个有限的问题。
Art is a way of thinking, not a profession.
The aim of art is not to represent the outward appearance of things, but their inward significance.
Language is a process of free creation; its laws and principles are fixed, but the manner in which the principles of generation are used is free and infinitely varied.
The best time to plant a tree was 20 years ago; the second best time is now.
True leadership in farming means making tough decisions for long-term gains.