—— 请按键盘 空白键 开始游戏 ——

The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
That is what learning is. You suddenly understand something you've understood all your life, but in a new way.
如果你的目标不是盈利——而是要做大,获得快速增长,或者成为科技行业的领军者——你将会面临很多问题。