...although sound is but the vibrations of the air which affect the tympanum of the ear, and vibrations of the air are but an accident among the accidents which depend upon the air, consider how much marvelous notes or a charming song influence the spirits! A wonderful song giveth wings to the spirit and filleth the heart with exaltation.... (‘Abdu’l-Baha, ‘Bahá'í World Faith’; The Compilation of Compilations, vol. II, Music)
