When a speaker's brow shineth with the radiance of the love
of God, at the time of his exposition of a subject, and he is exhilarated with
the wine of true understanding, he becometh the centre of a potent force which
like unto a magnet will attract the hearts. This is why the expounder must be
in the utmost enkindlement.
- ‘Abdu’l-Baha (From a Tablet; The Compilation of
Compilations, vol. II, Guidelines for Teaching)