数学的本质在于它的自由。
O homem só é verdadeiramente livre quando reconhece a sua dependência dos outros.
保持进步的唯一方法就是保持渴望。
孤独有时是我们为与众不同而付出的代价。
世界历史可以这样总结：强国总行不义。等到他们醒悟了，他们不已经不再强了。
我努力工作，表现出色，我会享受自己。我不会让你限制我。
When you think it's the most difficult, it's actually the closest you are to success.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。
