热机的动力与实现它的工质无关；其量仅由最终实现热量转移的物体之间的温度决定。

"The act of writing is an act of optimism. You wouldn't take the trouble to do it if you felt it didn't matter."

书籍经过多次传抄，“鱼” 字可能写成 “鲁” 字，“虚” 字可能写成 “虎” 字。

"Technique is important, but it should never overshadow the soul of the work."

The rules of morality are not the conclusion of our reason.

"A story has no beginning or end: arbitrarily one chooses that moment of experience from which to look back or from which to look ahead."

圆的周长大于任何内接等边多边形的周长，小于任何外切多边形的周长。