Human brotherhood and dependence exist because mutual
helpfulness and cooperation are the two necessary principles underlying human
welfare. This is the physical relationship of mankind. There is another
brotherhood—the spiritual—which is higher, holier and superior to all others.
It is heavenly; it emanates from the breaths of the Holy Spirit and the
effulgence of merciful attributes; it is founded upon spiritual susceptibilities.
This brotherhood is established by the Manifestations of the Holy One. (‘Abdu’l-Baha,
excerpt from a talk, 28
May 1912, New York; ‘The Promulgation of Universal Peace’) (To read the entire
talk please visit Talks of ‘Abdu’l-Baha)