Be generous in prosperity and thankful in adversity, Be fair in thy judgment, and guarded in thy speech. Be a lamp unto those who walk in darkness, and a home to the stranger. Be eyes to the blind, and a guiding light unto the feet of the erring. Be a breath of life to the body of humankind, a dew to the soil of the human heart, and a fruit upon the tree of humility.
Bahá'u'lláhThe 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'lláh