We should view all the peoples of the world as “leaves, blossoms and fruits” of “one tree”

The Blessed Beauty said: “All are the fruits of one tree and the leaves of one branch.” He likened the world of existence to one tree and all the souls to leaves, blossoms and fruits. Therefore all the branches, leaves, blossoms and fruits must be in the utmost of freshness, and the bringing about of this delicacy and sweetness depends upon union and fellowship. Therefore they must assist each other with all their power and seek everlasting life. Thus the friends of God must manifest the mercy of the Compassionate Lord in the world of existence and must show forth the bounty of the visible and invisible King. They must purify their sight, and look upon mankind as the leaves, blossoms and fruits of the tree of creation, and must always be thinking of doing good to someone, of love, consideration, affection and assistance to somebody. They must see no enemy and count no one as an ill wisher. They must consider every one on the earth as a friend; regard the stranger as an intimate, and the alien as a companion. They must not be bound by any tie, nay, rather, they should be free from every bond. In this day the one who is favored in the threshold of grandeur is the one who offers the cup of faithfulness and bestows the pearl of gift to the enemies, even to the fallen oppressor, lends a helping hand, and considers every bitter foe as an affectionate friend. (‘Abdu’l-Baha, ‘Baha’i World Faith’)