“If we give a swan milk mixed with water, the swan will take the milk and leave aside the water. Similarly, this material world is made of two natures—the inferior nature and the superior nature. The superior nature means spiritual life, and the inferior nature is material life. Thus a person who gives up the material part of this world and takes only the spiritual part is called paramahamsa.” (Shrila Prabhupada, Teachings of Queen Kunti, Ch 3)