O, contending peoples and kindreds of the earth! Set your faces towards unity, and let the radiance of its light shine upon you. Gather ye together, and for the sake of God resolve to root out whatever is the of contention amongst you. Then will the effulgence of the world’s great Luminary envelop the whole earth, and its inhabitants become the citizens of one city, and the occupants of one and the same throne.
— Gleanings from the Writings of Bahá’u’lláh , 111
When Bahá’u’lláh proclaimed His Message to the world in the nineteenth century He made it abundantly clear that the first step essential for the peace and progress of mankind was its unification. As He says, “The well-being of mankind, its peace and security are unattainable unless and until its unity is firmly established.” (The World Order of Bahá’u’lláh, p. 203) To this day, however, you will find most people take the opposite point of view: they look upon unity as an ultimate, almost unattainable goal and concentrate first on remedying all the other ills of mankind. If they did but know it, these other ills are but various symptoms and side effects of the basic disease — disunity.
—Wellspring of Divine Guidance, p. 131, The Universal House of Justice