Saint Viduras inquiry is very relevant. The word artha-vit, which refers to one who knows how to discriminate between reality and unreality, is very significant in this connection. An artha-vit is also called paramahamsa. A paramahamsa accepts only the active principle of everything; just as a swan accepts only the milk from a mixture of water and milk, a paramahamsa accepts only the Supreme Personality of Godhead as his life and soul, neglecting all external, material things. Dhruva Maharaja was in this category, and due to his determination he achieved, the result he desired, but still when he returned home he was not very pleased.