For the tongue is a smoldering fire, and excess of speech a deadly poison. Material fire consumeth the body, whereas the fire of the tongue devoureth both heart and soul. The force of the former lasteth but for a time, whilst the effects of the latter endureth a century.
(Bahá’u’lláh, Kitáb-i-Íqán, p. 183)
In brief, all humanity must be looked upon with love, kindness and respect; for what we behold in them are none other than the signs and traces of God Himself. All are evidences of God; therefore, how shall we be justified in debasing and belittling them, uttering anathema and preventing them from drawing near unto His mercy? This is ignorance and injustice, displeasing to God; for in His sight all are His servants.
(‘Abdu’l-Bahá, Promulgation of Universal Peace, pp. 230-231)
It is not only the right but the sacred obligation of every member to express freely and openly his views, without being afraid of displeasing or alienating any of his fellow-members.
(Shoghi Effendi, Lights of Guidance, p. 177)
The People of Bahá … should not defile their tongues with abuse.
(Bahá’u’lláh, Tablets of Bahá’u’lláh, p. 38)
The tongue is for mentioning what is good, defile it not with unseemly talk.
(Bahá’u’lláh, Kitáb-i-Aqdas, p. 182)