修炼的四个阶段：将精转化为气，气转化为神，神回归虚无，最终与道合一。

每一个超限的一致多重性，即每一个超限集合，必须有一个确定的阿列夫作为其基数。

But the old man thought only of his steering and his great tiredness. He had gone out too far and the sharks had beaten him. He knew they would leave him nothing but the stripped skeleton of his great catch.

追求真实的东西，不是追求人们想要的东西。

【译文】人世间的好话全让书本给说尽了，天下的名山大半被寺庙所占据了。上山不怕伤害人的老虎，就怕人际关系中那些两面三刀的阴险小人。

精神工作导致的疲劳不是因为工作的数量，而是因为工作的质量。