“That children dream not the first half year, that men dream not in some countries, with many more, are unto me sick men's dreams, dreams out of the Ivory gate, and visions before midnight.”

al'Lan Mandragoran
(15 November 1990)

Source: Cosmos

Δοιαὶ γάρ τε πύλαι ἀμενηνῶν εἰσὶν ὀνείρων·
αἱ μὲν γὰρ κεράεσσι τετεύχαται, αἱ δ' ἐλέφαντι.
οἵ ῥ' ἐλεφαίρονται, ἔπε' ἀκράαντα φέροντες·
οἳ δὲ διὰ ξεστῶν κεράων ἔλθωσι θύραζε,
οἵ ῥ' ἔτυμα κραίνουσι, βροτῶν ὅτε κέν τις ἴδηται.
XIX. 563–568 (tr. Robert Fagles); spoken by Penelope.
Odyssey (c. 725 BC)

"Celephaïs" - Written early November 1920; first published in The Rainbow, No. 2 (May 1922)<!-- p. 10-12 -->
Fiction
Context: There are not many persons who know what wonders are opened to them in the stories and visions of their youth; for when as children we listen and dream, we think but half-formed thoughts, and when as men we try to remember, we are dulled and prosaic with the poison of life. But some of us awake in the night with strange phantasms of enchanted hills and gardens, of fountains that sing in the sun, of golden cliffs overhanging murmuring seas, of plains that stretch down to sleeping cities of bronze and stone, and of shadowy companies of heroes that ride caparisoned white horses along the edges of thick forests; and then we know that we have looked back through the ivory gates into that world of wonder which was ours before we were wise and unhappy.

2016-01-06, Interview with Muhammad bin Salman, The Economist

450: Dreams — are well — but Waking's better
The Complete Poems of Emily Dickinson (1960)

The Burning World, p. 58
The Unexpected Dimension (1960)

Source: A Mercy

The Science of Personal Achievement (Audio - Nightingale-Conant).