The Seven Valleys ( Haft-Vádí) is a book written in Persian by Bahá'u'lláh, the founder of the Bahá'í Faith. The Four Valleys ( Chahár Vádí) was also written by Bahá'u'lláh, and the two books are usually published together under the title The Seven Valleys and the Four Valleys. The two books are distinctly different and have no direct relation.