使能,国之利也。
解释:任用有才能的人,对国家大有好处。
在量子力学中,观察者不是客观的,而是系统的一部分。
I have to be alone very often. I'd be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That's how I refuel.
Mathematics is a living subject, constantly evolving with new ideas and discoveries.
对付一个不自由的世界,唯一的方法就是变得如此绝对自由,以至于你的存在本身就是一种反抗。