Primary Metaphor: the basic connection that exist between subjective or abstract experiences such as good and concrete experiences such as up. These two concepts usually correlate in experience, and form the primary metaphor good is up. Thanks, Wikipedia
Well, as we are all diligent English students and we have all read and memorized the articles in our English book, the sentence I address should not be all that foreign.
“In a way quotations are like orphans: words that have been taken out from their original contexts and that need to be integrated into their new textual surroundings”
Okay so not to do exactly what the quote is saying not to do, or call what is actually a simile a metaphor—thine holy grammar Nazis, but why was this sentence necessary? Why did the author of this strange quote feel the need to use a figure of speech to describe this topic to their reader?
The real question is why do humans feel the need to continually use metaphors, similes, and other figures of speech in our written and everyday language? George Lakoff speaks on this subject and specifically how it pertains to thought patterns of conservatives and progressives, but that is way too much of a topic for this blog, look into 0-10 min for the relevant information. George Lakoff on the Political Mind