[logicallee]

Do you mean because it's a great sentence in the context of this essay (maybe the best one in it), but you judge that you couldn't get away with saying it verbatim in conversation?

(If you were explaining the idea in this essay?) Or please explain.

[birbal]

I actually love the sentence but I wouldn't expect it in spoken english. (That part is ironical in the sense that it goes against the core of the article.. Seems like an exception that proves the rule). Written word gives the reader more time to absorb the content than spoken word and hence I feel it is OK to use metaphorical language to make the point and make the reading experience delightful. But Paul's point is well taken that it's better not to use flowery language for most of the time. It takes a lot of skill to not go overboard with that thing.

[logicallee]

Yes, you make a good point. Also, since the reader can glance up and down the page, you don't have to repeat parts you have just stated very clearly, to make sure they're still with you, as you might while you talk. (You can do it briefly however.) In all, I expect my books to sound quite different from spoken conversation, for a variety of reasons.