It turns out, it's part of a big picture and all of general relativity is based on this one great equivalence of two quantities which are very different attributes.

已经证明的是,这确实只是冰山一角,广义相对论的所有理论,都是建立在这两个质量相等的基础之上,而这两个质量的属性有很大差异

耶鲁公开课 - 基础物理课程节选

Turning to the word literature, this is not theory of relativity, theory of music, or theory of government This is a course in theory of literature, and theory of literature shares in common with other kinds of theory the need for definition.

提到文学这个词，我们讲的不是不是相对论，音乐理论，或者政治理论,这是一门文学理论课程，和其他理论一样,它也需要定义。

耶鲁公开课 - 文学理论导论课程节选