“In regard to your question about capitalizing the pronouns:
the Guardian realizes this looks a little strange to non-Bahá'ís, but he feels
we, being believers, and having the full sense of the Stations of the Central
Figures of our Faith, should do this as a sign of respect under all
circumstances.”
It can, nevertheless, be noticed in the Guardian's
translations of Bahá'u'lláh's Tablets and Prayers, that sometimes he
capitalizes "Me" and "My" and sometimes not, depending upon
the context in which Bahá'u'lláh was referring to Himself; in humility towards
God or in majesty towards mankind.
(Memorandum to Universal House of Justice
dated 23 May 1991 from the Research Department of the Universal House of
Justice)