I don't think about the past. The only thing that matters is the future.
Leadership is about making others better as a result of your presence, and making sure that impact lasts in your absence.
The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.
孩子们值得拥有挑战他们的书,而不仅仅是娱乐。
预测未来的最好方式就是创造未来。