Water analogue of Soul - A thought

Soul of a man is like a pitcher of water kept in the open. In the beginning, it was pure, colorless, odourless. But over time, because of the cause-effect cycle, dust and chemicals pile up in the water. According to the dust falling into the pitcher, the taste and color of once pure water changes. The water no longer remains oure. This doesnt mean that the purity of water is lost for ever. By carefully countering the impurity causing materials with their duals, it is possible to reinstate the old purity. All life our efforts must be to maintain the purity of water. If suppose somebody looses purity, they dont have to get dijected thinking that the purity canot be got back. All religions talk about how to achieve this purity only.