The second principle of Baha'u'llah: Unity of Humanity

"The second principle of Baha'u'llah is: The Unity of Mankind

The one all-loving God bestows His divine Grace and Favour on all mankind; one and all are servants of the Most High, and His Goodness, Mercy and loving Kindness are showered upon all His creatures. The glory of humanity is the heritage of each one.

All men are the leaves and fruit of one same tree, they are all branches of the tree of Adam, they all have the same origin. The same rain has fallen upon them all, the same warm sun makes them grow, they are all refreshed by the same breeze. The only differences that exist and that keep them apart are these: there are the children who need guidance, the ignorant to be instructed, the sick to be tended and healed; thus, I say that the whole of humanity is enveloped by the Mercy and Grace of God. As the Holy Writings tell us: All men are equal before God. He is no respecter of persons."

-- 'Abdu'l-Baha, Paris Talks, pp. 131 - 132