The simplicity of nature is not to be measured by that of our conceptions.
Your brain is like a muscle; the more you use it, the stronger it gets.
我已经失去我的生命中不死的一部分,留下来的也就跟畜生没有分别了。
数学的研究就像空气或重力——它无处不在,你看不到它,但你知道它在那里。