B In fact, it's even a question whether A is A, but it's certainly not B, right? This much we know. In the grammatical sense there is no sort of mystification about the metaphor.

实际上，人们甚至对A是不是A都有疑问，但肯定不是，是吧，我们都知道这点，而从语法的角度来看,并没有像暗喻一样的神秘化。

耶鲁公开课 - 文学理论导论课程节选

Maybe A could be the same thing as B in this logically possible world, but we could imagine a completely different logically coherent world in which A was not the same thing as B.

也许在这某个逻辑世界里,A会和B是同一个东西,但我们可以想象,一个完全不同的另一个逻辑世界里,A和B不是同一个东西

耶鲁公开课 - 死亡课程节选

Because if B was just another word for, another way of talking about, A, then to imagine A existing but B not existing would be imagining A existing but-- well, B is just A--A not existing.

因为如果B只是,A的另一种表达方式,那么认为A存在而,B不存在就是认为A存在但,B,也就是A,却不存在

耶鲁公开课 - 死亡课程节选