a finely molded chin, speaking, in its want of prominence, of a want of moral energy; hair of a more than web-like softness and tenuity; these features, with an inordinate expansion above the regions of the temple, made up altogether a countenance not easily to be forgotten
Edgar Allen Poe. The Fall of the House of Usher
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Presumably the notes which we hear at such moments tend to spread out before our eyes, over surfaces greater or smaller according to their pitch and volume; to trace arabesque designs, to give us the sensation of breath or tenuity, stability or caprice.