Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.
There are no sunset industries, only sunset thinking.
A good world needs knowledge, kindliness, and courage; it does not need a regretful hankering after the past or a fettering of the free intelligence by the words uttered long ago by ignorant men.
受过教育的心灵的标志是能够思考一种思想而不必接受它。