It is ignorance, and it must be fought, it must be eradicated.
Our individual soul (false, atma) - parcel of the Supreme Soul (Paramatma, Brahman). Field for the jiva is the body which the soul receives according to his desires. Abused his freedom, Jiva enters the material world, which is under the authority of the three modes (states, modes, attachment) - ignorance, passion, goodness. In the material world the jiva forgets his divine nature, and given the power of karma, that is a causal relationship.
In the spiritual world there are three levels of the planets. Highest level occupied by the demigods, those whose Jiva is in the mode of goodness and virtue. These include themselves Krishnas, the Brahmins, the Vedic scholars of Vedic philosophy and cows. Mid - including Earth - includes the body, which the Jiva in the mode of passion. Passion - is the desire to honor, family, home. A man is forced to work hard. On the lower level of the planets are in the mode of ignorance jiva (laziness, madness), for which he received the bodies of animals. Depending on our behavior, our soul can move in either human or animal, or to become an insect or mineral. How to avoid this sad fate?
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