Theorems are the milestones of mathematics.

"The key to making money in the markets is not to be right all the time, but to be right more often than you are wrong."

没有远见的技巧是空洞的，没有技巧的远见是盲目的。

科学中最重要的不是获得新的事实，而是发现思考它们的新方法。