History has neither the desire nor the capacity to make men better or worse; it merely records what they have been and what they have done.
Change is hard, but it is necessary for progress.
I don’t need a map, I make my own path.
大萧条是二十世纪的决定性宏观经济事件,它引发了对宏观经济理论和政策的根本性重新思考。
学习是系统中产生的任何变化,这些变化或多或少会永久性地改变其适应环境的能力。
I don't care what people say about me as long as it isn't true.