The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.
Every application of technology must be based on sustainability.
我看到一切。这就是我的问题。
〈党员须宣传革命主义〉，在梧州对国民党员的演说，1921年10月29日至11月15日间
In times of change, the learners inherit the earth, while the learned find themselves beautifully equipped to deal with a world that no longer exists.