The only authentic difference between Nautilus and Zenith is that in both cases all the streets look alike but in Nautilus they do not look alike for so many miles.
And as natural, as conventional, as youthfully gauche, as eternally beautiful and authentic as those ancient sounds was the talk of Martin and Leora in that passionate half-hour when each found in the other a part of his own self, always vaguely missed, discovered now with astonished joy.
They had decided that Martin and Leora were free spirits like themselves, and amusing, but they had also decided, long before the Arrowsmiths had by coming to Nautilus entered into authentic existence, that the Group had a monopoly of all Freedom and Amusingness, and they expected the Arrowsmiths to appear for cocktails and poker every Saturday and Sunday evening.
…clues with their footsteps; and worse than the men like hogs, worse than the imbeciles who have not even heard of science, he hates pseudo-scientists, guess-scientists— like these psycho-analysts; and worse than those comic dreamscientists he hates the men that are allowed in a clean kingdom like biology but know only one text-book and how to lecture to nincompoops all so popular! He is the only real revolutionary, the authentic scientist, because he alone knows how liddle he knows.
There are no more uses of "authentic" in the book.
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I appealed to Boney now, Detective Rhonda Boney with the sympathetic air that seemed at least partly authentic.