种一棵树最好的时间是20年前，第二好的时间是现在。
The best time to plant a tree was 20 years ago; the second best time is now.
My scientific studies have afforded me great satisfaction; and I am convinced that it will not be long before the whole world acknowledges the results of my work.
你比你想象的更强大，比你相信的更勇敢，比你知道的更聪明。
The main task of a leader is to create and maintain the competitive advantage of the organization.
The returns to education are higher than most people realize.