Sometimes the hardest thing and the right thing are the same.

人生中唯一真正的失败是不忠于自己所知的最好。

The best way to learn mathematics is to do mathematics.

The ability to imagine counterfactuals is what distinguishes humans from machines.

数学的本质在于它的自由。

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.

在路上所感受到的快乐，是酒馆里所没有的。