The true value of a forest cannot be measured in board feet alone.
A problem that can be solved with money is not really a problem.
创新不仅仅是创造新产品;而是重新思考我们如何解决问题。
No man really knows about other human beings. The best he can do is to suppose that they are like himself.
一滴墨水,可以唤起千百万人的思想。