All thoughts that appear in the mind of the aspirant are forms of perturbation and have their origin in the momentum of stored sanskaras. The agitation of the mind can disappear only when the aspirant can so
control his mind that all thoughts can be ruled out at will. Only in complete internal silence is Truth found. When the surface of the lake is still, it reflects the stars. When the mind is tranquil, it reflects the
nature of the soul as it is.
— Discourses 7th Ed., p239