——1941年与美国外交官阿弗雷尔·哈里曼（Averell Harriman）的谈话

At the close of our studies， we knew all the past of physics， but nothing of the present and the future.

The more you experience positive emotions, the more open you become. The more open you are, the more you see. The more you see, the more you can do. The more you can do, the more you can grow.