应对不自由世界的唯一方法就是变得如此绝对自由，以至于你的存在本身就是一种反抗。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
The process of grouping, of organization, is not arbitrary but follows definite laws.
The truth is rarely pure and never simple.
The simplest solutions are often the most elegant.
The Vietnamese people deeply love independence, freedom, and peace. But in the face of a threat to their country's independence and freedom, the Vietnamese people would rather sacrifice everything to defend their homeland.
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：它是关于理解的。
电影是一种观察世界、理解世界并改变世界的方式。