conceptualize language metaphorically in terms of space

"Since speaking is correlated with time and time is metaphorically conceptualized in terms of space, it is natural for us to conceptualize language metaphorically in terms of space." (#60 2182)

exact paraphrases are usually impossible because the so-called paraphrases are expressed in different forms

"Because we conceptualize linguistic form in spatial terms, it is possible for certain spatial metaphors to apply directly to the form of a sentence, as we conceive of it spatially. This can provide automatic direct links between form and content, based on general metaphors in our conceptual system. Such links make the relationship between form and content anything but arbitrary, and some of the meaning of a sentence can be due to the precise form the sentence takes. Thus, as Dwight Bolinger (1977) has claimed, exact paraphrases are usually impossible because the so-called paraphrases are expressed in different forms." (#60 2187)