The most interesting art happens at the edges of disciplines.
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。
When you are stuck, sleep on it. Let your subconscious work for you.
登山不论遇到什么艰难险阻都不停止脚步,就一定能够登上山顶。