sa vasanatma visayoparakto
guna-pravaho vikrtah sodasatma
bibhrat prthan-namabhi rupa-bhedam
antar-bahistvam ca purais tanoti
sahthat; vasanaendowed with many desires; atmathe mind; visaya-uparaktahattached to material happiness, sense gratification; guna-pravahahdriven by the force of either sattva-guna, rajo-guna or tamo-guna; vikrtahtransformed by lust and so on; sodasa-atmathe chief of the sixteen material elements (the five gross elements, the ten senses and the mind); bibhratwandering; prthak-namabhihwith separate names; rupa-bhedamassuming different forms; antah-bahistvamthe quality of being first-class or last-class; caand; puraihwith different bodily forms; tanotimanifests.
Because the mind is absorbed in desires for pious and impious activities, it is naturally subjected to the transformations of lust and anger. In this way, it becomes attracted to material sense enjoyment. In other words, the mind is conducted by the modes of goodness, passion and ignorance. There are eleven senses and five material elements, and out of these sixteen items, the mind is the chief. Therefore the mind brings about birth in different types of bodies among demigods, human beings, animals and birds. When the mind is situated in a higher or lower position, it accepts a higher or lower material body.
Transmigration among the 8,400,000 species is due to the minds being polluted by certain material qualities. Due to the mind, the soul is subjected to pious and impious activities. The continuation of material existence is like the waves of material nature. In this regard. Srila Bhaktivinoda Thakura says, mayara vase, yaccha bhese, khaccha habudubu, bhai: My dear brother, the spirit soul is completely under the control of maya, and you are being carried away by its waves. This is also confirmed in Bhagavad-gita:
The bewildered spirit soul, under the influence of the three modes of material nature, thinks himself the doer of activities, which are in actuality carried out by nature. (Bg. 3.27)
Material existence means being fully controlled by material nature. The mind is the center for accepting the dictations of material nature. In this way the living entity is carried away in different types of bodies continuously, millennium after millennium.
Due to the living entitys forgetfulness of Krsna, one is bound by the laws of material nature.

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