不要让恐惧阻止你做你想做的事。
Don't let fear stop you from doing what you want to do.
To be under occupation is to be reminded of death at every moment.
用程序证明四色定理不会改变数学——它只是证明了这个挑战了一个世纪的定理是一个有限的问题。
数学的真正乐趣在于发现的过程,而不仅仅是结果。
举一个例子尚且不明白,就不要追求见多识广。 
My work is not about the Holocaust, it's about the human condition.
Liberty means responsibility. That is why most men dread it.
我无法预测未来,但我可以创造未来。
健康的国民是一个国家能拥有的最大财富。