“Souls must be transformed…”

It is not enough to proclaim the Bahá'í message, essential as that is. It is not enough to expand the rolls of Bahá'í membership, vital as that is. Souls must be transformed, communities thereby consolidated, new models of life thus attained. Transformation is the essential purpose of the Cause of Bahá'u'lláh, but it lies in the will and effort of the individual to achieve it in obedience to the Covenant. 

- The Universal House of Justice  (1989 Ridvan message; The Compilation of Compilations, Vol. III, Promoting Entry by Troops)