在苏联军队中,撤退比进攻更需要勇气。
——1941年与美国外交官阿弗雷尔·哈里曼(Averell Harriman)的谈话
The most exciting discoveries often come from looking at old problems in completely new ways.
"The camera sees more than the eye, but understands less."
The history of science is the history of men correcting their mistakes.