Apparent Impurity of the Soul
204. Just as the water which is very muddy again appears as transparent water when the mud is removed, so the Atman also manifests Its undimmed lustre when the taint has been removed.
[ Water is naturally pure, but it is polluted by foreign substances mixing with it. These impurities can be removed by filtration, distillation etc. So the apparent impurity of the soul can be removed by discrimination, which shows that it is Nescience that hides the real nature of the Self. ]
Vivekachudamani, Swami Madhavananda, Advaita Ashrama, 1921; 204