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。
"The only thing to do with good advice is to pass it on. It is never of any use to oneself."
A tranquil mind is the source of health.
The development of AI requires open cooperation, not working behind closed doors.