aerian

adjective /eɪˈɪəɹɪən,ˈɛːɹɪən,ˌeɪˈɪɻiən,ˈɛɻiən/

Of or belonging to the atmosphere or to the air; aerial.

The voice, which is the aerian sign of thought, whence of the soul, which instructs, preaches, exhorts, prays, praises, loves, through which the entire being is manifested in life, nearly palpable by the blind, impossible to describe because it is too undulating and diverse, in fact too alive and incarnate in too many sonorous forms, the voice that Théophile Gautier gave up trying to put into words because it is neither soft, nor dry, nor hot, nor cold, nor colorless, nor colorful, but has something of all that in another domain, that voice that one cannot touch, that one cannot see, that most immaterial of terrestrial things, that which most resembles a spirit, is stolen on the fly by science with a stylet and buried in small holes on a turning cylinder.