The third Tajallí 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. Happy are those possessed of a
hearing ear. In truth, knowledge is a veritable treasure for man, and source of
glory, of bounty, of joy, of exaltation, of cheer and gladness unto him. Thus
hath the Tongue of Grandeur spoken in this Most Great Prison. - Bahá'u'lláh (‘Tablets of Bahá'u'lláh revealed after the Kitáb-i-Aqdas’; The Compilation of
Compilations, vol. III, Social and Economic Development)
