Exalted as is the rank of 'Abdu'l-Bahá, and however profuse the praises with which in these sacred Books and Tablets Bahá'u'lláh has glorified His son, so unique a distinction must never be construed as conferring upon its recipient a station identical with, or equivalent to, that of His Father, the Manifestation Himself… Indeed, as I have already stated, those who overestimate 'Abdu'l-Bahá's station are just as reprehensible and have done just as much harm as those who underestimate it. And this for no other reason except that by insisting upon an altogether unwarranted inference from Bahá'u'lláh's writings they are inadvertently justifying and continuously furnishing the enemy with proofs for his false accusations and misleading statements.
- Shoghi Effendi (The World Order of Baha'u'llah)