"Three times Randolph Carter dreamed of the marvelous city, and three times was he snatched away while still he paused on the high terrace above it. ...

At length, sick with longing for those glittering sunset streets and cryptical hill lanes among ancient tiled roofs, nor able sleeping or waking to drive them from his mind, Carter resolved to go with bold entreaty whither no man had gone before, and dare the icy deserts through the dark to where unknown Kadath, veiled in cloud and crowned with unimagined stars, holds secret and nocturnal the onyx castle of the Great Ones.

In light slumber he descended the seventy steps to the cavern of flame and talked of this design to the bearded priests Nasht and Kaman-Thah. And the priests shook their pshent-bearing heads and vowed it would be the death of his soul. They pointed out that the Great Ones had shown already their wish, and that it is not agreeable to them to be harassed by insistent pleas. They reminded him, too, that not only had no man ever been to Kadath, but no man had ever suspected in what part of space it may lie; whether it be in the dreamlands around our own world, or in those surrounding some unguessed companion of Fomalhaut or Aldebaran. If in our dreamland, it might conceivably be reached, but only three human souls since time began had ever crossed and recrossed the black impious gulfs to other dreamlands, and of that three, two had come back quite mad. There were, in such voyages, incalculable local dangers; as well as that shocking final peril which gibbers unmentionably outside the ordered universe, where no dreams reach; that last amorphous blight of nethermost confusion which blasphemes and bubbles at the centre of all infinity—the boundless daemon sultan Azathoth, whose name no lips dare speak aloud, and who gnaws hungrily in inconceivable, unlighted chambers beyond time amidst the muffled, maddening beating of vile drums and the thin, monotonous whine of accursed flutes; to which detestable pounding and piping dance slowly, awkwardly, and absurdly the gigantic Ultimate gods, the blind, voiceless, tenebrous, mindless Other gods whose soul and messenger is the crawling chaos Nyarlathotep."
The Dream-Quest of Unknown Kadath, H. P. Lovecraft