This quote reminded me so much of the Baha’i Faith and its teachings about world unity and oneness. Here are a couple quotes for you to explore 🙂

O well-beloved ones! The tabernacle of unity hath been raised; regard ye not one another as strangers. Ye are the fruits of one tree, and the leaves of one branch. (Baha’u’llah, Gleanings from the Writings of Bahá’u’lláh, p. 218)

The most glorious fruit of the tree of knowledge is this exalted word: Of one tree are all ye the fruit, and of one bough the leaves. Let not man glory in this that he loveth his country, let him rather glory in this that he loveth his kind. Concerning this We have previously revealed that which is the means of the reconstruction of the world and the unity of nations. Blessed are they that attain thereunto. Blessed are they that act accordingly. (Baha’u’llah, Tablets of Bahá’u’lláh, p. 127)

It is not for him to pride himself who loveth his own country, but rather for him who loveth the whole world. The earth is but one country, and mankind its citizens. (Baha’u’llah, Gleanings from the Writings of Bahá’u’lláh, p. 250)