Terrace 9 and the Shrine of the Báb, Mt. Carmel
'It is natural for the heart and spirit to take pleasure and enjoyment in all things that show forth symmetry, harmony, and perfection. For instance: a beautiful house, a well designed garden, a symmetrical line, a graceful motion, a well written book, pleasing garments—in fact, all things that have in themselves grace or beauty are pleasing to the heart and spirit—therefore, it is most certain that a true voice causes deep pleasure'. --‘Abdu’l-Bahá