历史学家必须兼具诗人和哲学家的特质。
To keep young kids behaving on a car road trip， have a bag of their favorite candy and throw a piece out the window each time they misbehave.
I never write Metropolis for seven cents because I can get the same price for city. I never write policeman because I can get the same money for cop.
做出伟大工作的唯一方法就是热爱你所做的事。