——晚年访谈

数学是模式的科学，我们研究它们以学习如何逻辑地、批判地和创造性地思考。

The first step in liquidating a people is to erase its memory. Destroy its books, its culture, its history. Then have somebody write new books, manufacture a new culture, invent a new history. Before long the nation will begin to forget what it is and what it was. The world around it will forget even faster.

Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel to be tough.

内心平静，不为外界风波所动。