In the Middle Ages people were well aware of the inexhaustible power that arises simply from sitting still... The inner quiet which arises when the body is motionless and in its best possible form can become the source of transcendental experience. By emptying ourselves of all those matters that normally occupy us, we become receptive to Greater Being. True enlightenment has the effect of so fundamentally affecting and shaking the whole person that they themselves, as well as their total physical existence in the world, is completely transformed.
There is a silence of the tongue, there is a silence of the whole body, there is a silence of the soul, there is a the silence of the mind, and there is the silence of the spirit. The silence of the tongue is merely when it is not incited to angry speech or to stirring up trouble; the silence of the soul is when there are no ugly thoughts bursting forth within it; the silence of the mind is when it is not reflecting on any harmful knowledge or wisdom; the silence of the spirit is when the mind ceases even from stirrings caused by created spiritual beings and all its movements are stirred solely by Being, at the wondrous awe of the silence which surrounds Being. In this state it is truly silent, aware that the silence which is upon it is itself silent.