说某事就是执行一项行动，而执行行动就是用言辞来实现某事。
To say something is to perform an action， and to perform an action is to do something with words.
我写歌是为了记住，也是为了忘记。
未来的农业必须建立在今天的教训之上。
The way in which men produce their means of subsistence depends first of all on the nature of the actual means they find in existence and have to reproduce.
The key to successful investing is to have a clear understanding of the risks and rewards, a disciplined approach, a long-term perspective, and a strong understanding of the fundamentals.