科学的进步不是一条直线,而是一系列曲折,常常需要回溯步骤以获得更好的立足点。
The earth gives us coal; our duty is to give back stewardship.
Simplicity is the ultimate sophistication.
The investor's chief problem - and even his worst enemy - is likely to be himself.
Leadership is about making tough decisions today that will benefit generations to come.