中国和其他威权国家的崛起挑战了自由民主是唯一可行政治制度的观念。

The most profound truths are often the ones we take for granted.

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

处理一个不自由的世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。