Bahá’í Sacred Writings, Bahá’u’lláh, #44

Ever since the seeking of preference and distinction came into play, the world hath been laid waste. It hath become desolate. Those who have quaffed from the ocean of divine utterance and fixed their gaze upon the Realm of Glory should regard themselves as being on the same level as the others and in the same station. Were this matter to be definitely established and conclusively demonstrated through the power and might of God, the world would become as the Abhá Paradise.

Indeed, man is noble, inasmuch as each one is a repository of the sign of God. Nevertheless, to regard oneself as superior in knowledge, learning or virtue, or to exalt oneself or seek preference, is a grievous transgression. Great is the blessedness of those who are adorned with the ornament of this unity and have been graciously confirmed by God.