January 19

Although there can be no question or doubt as to the sweetness of the Persian tongue, yet it hath not the scope of the Arabic. There are many things which have not been expressed in Persian, that is to say, words referring to such things have not been devised, whilst in Arabic there are several words describing the same thing. Indeed there existeth no language in the world as vast and comprehensive as Arabic. This statement is prompted by truth and fairness; otherwise it is clear that in this day the world is being illumined by the splendours of that Sun which hath dawned above the horizon of Persia, and that the merits of this sweet language can scarcely be overestimated. 
(Baha’u’llah, ‘The Tabernacle of Unity, Bahá’u’lláh’s Responses to Mánikchí Sáhib and Other Writings’)