Still no definitive answer on this one then? I have asked a couple of other people about this, and the consensus view is that it means: "even though it may be / even if it were [many times Plato's and Shakespeare's]" (which I think is more or less what I said last time). Some typical examples of this usage of the archaic "were it never so" (randomly Googled) in which the meaning is perhaps slightly clearer: ...
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