CLVI. He Who is the Eternal Truth hath, from the Day Spring of Glory, directed His eyes towards the people of Baha, and is addressing them in these words: "Address yourselves to the promotion of the well-being and tranquillity of the children of men. Bend your minds and wills to the education of the peoples and kindreds of the earth, that haply the dissensions that divide it may, through the power of the Most Great Name, be blotted out from its face, and all mankind become the upholders of one Order, and the inhabitants of one City. Illumine and hallow your hearts; let them not be profaned by the thorns of hate or the thistles of malice. Ye dwell in one world, and have been created through the operation of one Will. Blessed is he who mingleth with all men in a spirit of utmost kindliness and love."
Gleanings from Writings - Bahá'u'lláh