‘Abdu’l-Bahá (1844-1921), the son of Bahá'u'lláh, is considered to be the perfect exemplar of the Bahá'í teachings. In all of their endeavours, Bahá'ís consciously strive to emulate ‘Abdu’l-Bahá’s qualities. In His Will and Testament, Bahá'u'lláh named ‘Abdu’l-Bahá as His successor and the authorized interpreter of His Writings. See our collections of ‘Abdu’l-Bahá's Writings here, and His Talks here, or read more about ‘Abdu’l-Bahá on the official international Bahá'i website .