Ashtavakra Gita 18.78 -

The ordinary individual will be full of anxiety, fear, concern, likes and dislikes. He has no freeness, peace or poise. Except in sleep, his inside will be virtually a cyclone or blazing fire!

Think of the spiritually enlightened person. His eyes also see, ears hear, nose smells, tongue tastes and skin touches. But their impact causes no discontent, as in him sparkles the steady Self.

As the Self, the Knower is always the witness, not the witnessed. No sensation touches or involves him, for he is its witness alone. Witness is different from the witnessed. He only witnesses the agitation, stress and strain. Never he becomes them. Why should he then react to them? Where is thus any cause for affectation on any account? It is a wonderful state of distinctness, aloofness!

Spiritually analysed, the world is a collection of dvandvas, pairs of opposites. Gain and loss, victory and defeat, favourable and unfavourable, acceptance and rejection, all are dvandvas. Together they generate in the mind, happiness and unhappiness. The Knower only witnesses these duos. In witnessing, nothing occurs to him. To their arrival and departure, he remains the same, even and uniform. Whether light or darkness, gain or loss, misfortune or fortune, friend or foe, none, nothing means anything to him, as he only witnesses all, like the space hosting earth, water, air and fire. Let the four cause any commotion. The fifth remains in its own distinctness. So too the Knower!