Every life contains its own mysteries, and the biographer must respect the unknowable.

书籍不仅仅是物品；它们是经历，它们改变我们。

创新不仅仅是技术问题，它关乎人、文化以及营造一个让想法蓬勃发展的环境。

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.