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.
It is an axiomatic fact that while you meditate you are speaking with your own spirit. In that state of mind you put certain questions to your spirit and the spirit answers: the light breaks forth and the reality is revealed.
Abdu’l-Bahá (PARIS TALKS )
The sign of contemplation is silence
