I recalled the names of the places round it as if they had been situated at the foot of Parnassus or of Helicon, and they seemed precious to me, as the physical conditions — in the realm of topographical science — required for the production of an unaccountable phenomenon.
Marcel Proust. In Search of Lost Time [volume 3]
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‘ We started the next morning for Parnassus, the double-peaked Parnassus.’ All this volume is about Greece, you know,” Mr. Brooke wound up, rubbing his thumb transversely along the edges of the leaves as he held the book forward.
George Eliot. Middlemarch
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These pages, numbering nine, had been extracted from copies of the two first Parnassian books; it was printed on parchment paper and preceded by this title: Quelques vers de Mallarmé, designed in a surprising calligraphy in uncial letters, illuminated and relieved with gold, as in old manuscripts.