The best time to plant a tree was 20 years ago; the second best time is now.
种一棵树最好的时间是20年前,第二好的时间是现在。
做出伟大工作的唯一方法就是热爱你所做的事情。
The 40% solution: The capacity to increase happiness is within our personal control.
在我看来,问题在于你被灌输了这样的信念:你所做的事情至关重要。但这全是无稽之谈。
I believe in the power of education to change the world.