Warn, O Salmán, the beloved of the one true God, not to view with too critical an eye the sayings and writings of men. Let them rather approach such sayings and writings in a spirit of open-mindedness and loving sympathy. Those men, however, who, in this Day, have been led to assail, in their inflammatory writings, the tenets of the Cause of God, are to be treated differently. It is incumbent upon all men, each according to his ability, to refute the arguments of those that have attacked the Faith of God. Thus hath it been decreed by Him Who is the All-Powerful, the Almighty. (Baha’u’llah, ‘Gleanings from the Writings of Bahá'u'lláh’; The Compilation of Compilations, vol. III, Scholarship)