林肯的政敌批评林肯有“两面三刀”时的幽默回应。因为就政治人物而言，林肯的长相极不讨喜，像个野猴
The only way to find out anything about what kinds of books people would like to read is to publish books and see what happens.
与饥饿的斗争是为正义而战。
经济学家必须贪婪地收集事实；但事实本身并不能说明什么。