因果推理的力量在于它允许我们预测我们从未采取的行动的效果。
数学的乐趣在于发现的旅程,而不仅仅是目的地。
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
现在天下没有人行义,那么你应该鼓励我,为什么反而阻止我呢? 
The truth is rarely pure and never simple.
"The stage is where I feel most at home."