每种材料都有自己的记忆和历史。
Every material has its own memory and history.
Democracy is the worst form of government except all those other forms that have been tried from time to time.
I believe that we are lost here in America, but I believe we shall be found.
要想成功，你必须愿意失败。
With freedom, books, flowers and the moon who could not be happy?
译文：事前不研讨，遇变难以应对;军队不训练，作战难以取胜。强调未雨绸缪的重要性。
Writing is a way of preserving the truth.