History taught us is that people never know learn the lessons of history.
眼睛不仅仅是一种光学仪器；它是心灵认知外部世界的器官。
It is not because certain things are difficult that we do not dare;it is because we do not dare that things are difficult.
煤炭行业是美国能源独立的支柱，已经持续了几代人。
The more you learn, the more you know, the more you know, the more you forget. The more you forget, the less you know. So why bother to learn?
生命是一份礼物，它赋予我们特权、机会和责任，通过成长来回报。