तूष्णीमवस्था परमोपशान्ति -र्बुद्धेरसत्कल्पविकल्पहेतोः ।ब्रह्मात्मना ब्रह्मविदो महात्मनोयत्राद्वयानन्दसुखं निरन्तरम् ॥ ५२७ ॥
In plain words
Silence, real silence, is the mind finally coming to rest - the mind that never stops manufacturing its false alternatives. For the great soul who knows he is Brahman, that silence is where an unbroken, undivided joy simply is.
Close to the Sanskrit
Silence is the supreme cessation of the intellect, which is the cause of unreal imaginings and doubts, for the great-souled knower of Brahman who is Brahman itself - wherein is the unbroken joy of non-dual bliss.