The third Tajalli is concerning arts, crafts and sciences. Knowledge is as wings to man's life, and a ladder for his ascent. Its acquisition is incumbent upon everyone. The knowledge of such sciences, however, should be acquired as can profit the peoples of the earth, and not those which begin with words and end with words. Great indeed is the claim of scientists and craftsmen on the peoples of the world. Unto this beareth witness the Mother Book on the day of His return.... (Baha’u’llah, ‘Tablets of Bahá'u'lláh Revealed After the Kitáb-i-Aqdas’; The Compilation of Compilations, vol. 1, Extracts from the Writings concerning arts and crafts)
