The Friends must realize the Power of the Holy Spirit which is manifest and quickening them at this time through the appearance of Bahá'u'lláh. There is no force of heaven or earth which can affect them if they place themselves wholly under the influence of the Holy Spirit and under its guidance....
- Shoghi Effendi (From a letter dated 11 August 1957 written on behalf of Shoghi Effendi to an individual believer; the Comilation of Compilations, vol. II, The Power of Divine Assistance)
