This world has been created out of living as well as nonliving things, both good and bad. In our scriptures it is said that if you mix water in milk (milk represents the essence and water is non-essence) and it is placed before a swan, then the swan will extract all the milk leaving aside the water. Only a swan has this special characteristic. Similarly, people who adopt this characteristic are able to segregate the useful from the useless and they invariably accept the useful. This means that they will practise spiritual knowledge in their lives.
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