The utterance of God is a lamp, whose light is these words: Ye are the fruits of one tree, and the leaves of one branch. Deal ye one with another with the utmost love and harmony... So powerful is the light of unity that it can illuminate the whole earth.
Bahá'u'lláhNor shall the seeker reach his goal unless he sacrifice all things. That is, whatever he has seen, and heard, and understood (before), all must he set at naught, that he may enter the Realm of the Spirit, which is the City of God.
Bahá'u'lláh