It is certain that the greatest of instrumentalities for
achieving the advancement and the glory of man, the supreme agency for the
enlightenment and the redemption of the world, is love and fellowship and unity
among all the members of the human race. Nothing can be effected in the world,
not even conceivably, without unity and agreement, and the perfect means for
engendering fellowship and union is true religion. “Hadst
Thou spent all the riches of the earth, Thou couldst not have united their
hearts; but God hath united them...” [Qur’án 8:64]
(‘Abdu’l-Baha, ‘The Secret
of Divine Civilization’)