Our descendants will achieve thins that will amaze us, yet a portion of what they will create could have been made with today’s materials and tools if we had had the imagination. Think bigger.

You can't knock on opportunity's door and not be ready.

History is not the past. It is the present. We carry our history with us. We are our history.

预测未来的最好方法就是创造未来。

改变的秘诀在于集中所有精力，不是与过去斗争，而是建设未来。

Writing is a way of bearing witness to the world.