Chick tracts, " Allah Had No Son http://www.chick.com/reading/tracts/0042/0042_01.asp" (1994)
“His everyday conscious self is only a small part of the mind, like the final crescent of the moon. In moments of crisis, the full moon suddenly appears.”
Source: Poetry and Mysticism (1969), p. 156
Context: These are the visionary, mystical moments, when a man 'completes his partial mind'. His everyday conscious self is only a small part of the mind, like the final crescent of the moon. In moments of crisis, the full moon suddenly appears.
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Colin Wilson 192
author 1931–2013Related quotes

“Perhaps the crescent moon smiles in doubt
at being told that it is a fragment
awaiting perfection.”
Source: Fireflies: A Collection of Proverbs, Aphorisms and Maxims

Encounters With Cold Mountain, tr. Peter Stambler (Foreign Languages Press, Beijing, 1996)

Augustus William Hare and Julius Charles Hare Guesses at Truth (London: Macmillan, ([1827-48] 1867) pp. 209-10.
Misattributed

Source: The Unabridged Journals of Sylvia Plath

Note "is less than a quadrant..." is less than 90° by l/30th of 90° or 3°, and is therefore equal to 87°.
On the Sizes and Distances of the Sun and the Moon (c. 250 BC)

"Twenty-three Horse Poems", 5 (《马诗二十三首(其五)》), in Song of the Immortals: An Anthology of Classical Chinese Poetry, trans. Xu Yuanchong (Penguin Books, 1994), p. 91
Original: (zh-CN) 大漠沙如雪,燕山月似钩。
何当金络脑,快走踏清秋。