As you are no doubt aware, the Tablets of the Divine Plan,
which were revealed by 'Abdu'l-Bahá during the First World War, are the Charter
for the teaching of the Faith. All the teaching plans launched by the beloved
Guardian, as well as those subsequently directed by the Universal House of Justice, are stages in the implementation of this master plan conceived by the Centre
of the Covenant for the diffusion of the Message of Bahá'u'lláh.
- The Universal House of Justice (From a letter
written on behalf of the Universal House of Justice to an individual believer, September 29,
1977; compilation: Lights of Guidance)