The most important single central fact about a free market is that no exchange takes place unless both parties benefit.
关于自由市场最重要的一点是，除非双方都受益，否则交易不会发生。
You have to figure out what your own aptitudes are. If you play games where other people have the aptitudes and you don’t, you’re going to lose. And that’s as close to certain as any prediction that you can make. You have to figure out where you’ve got an edge. And you’ve got to play within your own circle of competence.
"I never guess. It is a shocking habit—destructive to the logical faculty."