Silence

He must . . . observe silence and refrain from idle talk. 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, Gleanings from the Writings of Bahá’u’lláh, p. 264

Let him sit in silence to hearken to the verses of God, the Sovereign, the Almighty, the All-Praised.

Bahá’u’lláh, Synopsis and Codification of the Kitáb-i-Aqdas, p. 61

The essence of true safety is to observe silence, to look at the end of things and to renounce the world.

Bahá’u’lláh, Tablets of Bahá’u’lláh, p. 156

It behooveth you to remain silent before His Throne, for indeed of all the things which have been created between heaven and earth nothing on that Day will be deemed more fitting than the observance of silence.

The Báb, Selections from the Writings of the Báb, p. 164

Verily, be not grieved if a thing ye asked of Him remaineth unanswered, inasmuch as He hath been commanded by God to observe silence, a silence which is in truth praiseworthy.

The Báb, Selections from the Writings of the Báb, p. 48

Bahá’u’lláh says there is a sign (from God) in every phenomenon: the sign of the intellect is contemplation and the sign of contemplation is silence, because it is impossible for a man to do two things at one time -- he cannot both speak and meditate.

‘Abdu’l-Bahá, Paris Talks, p. 174