最危险的事情就是满足于过去的成功。
The most dangerous thing is to become complacent with past success.
The best solutions come from listening to those who work the land every day.
Internal mental events are irrelevant to the scientific study of behavior.
翻译：谦虚恭敬是为了保住自己的位置。
单一货币的最大优势在于消除了汇率不确定性并降低了交易成本。