The study of logic is not just about rules of inference, but about the very nature of reasoning itself.
逻辑学研究不仅仅是关于推理规则，而是关于推理本身的本质。
人一生有两个最重要的日子，一是出生的那天，二是发现你为何而生的那天。
To be a writer is to have a certain kind of sensitivity to the world, to be able to see what others do not see, to hear what others do not hear.
一个好的数学家总是准备好进行概括。