२०६
Bhagavad-pitā  As It is
[Ch. 3]
for the child in the womb is so helpless that he cannot even move. This stage of living condition can be compared to that of the trees. The trees are also living entities, but they have been put in such a condition of life by such a great exhibition of lust that they are almost void of all consciousness. The covered mirror is compared to the birds and beasts, and the smoke covered fire is compared to the human being. In the form of a human being, the living entity may revive a little Krṣna consciousness, and, if he makes further development, the fire of spiritual life can be kindled in the human form of life. By careful handling of the smoke in the fire, the fire can be made to blaze. Therefore the human form of life is a chance for the living entity to escape the entanglement of material existence. In the human form of life, one can conquer the enemy, lust, by cultivation of Krṣna consciousness under able guidance.
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आवृतं ज्ञानमेतेन ज्ञानिनो नित्यवैरिणा । कामरूपेण कौन्तेय दुष्पूरेणानलेन च ॥३९॥
āvṛtaṁ jñānam etena jñānino nitya-vairiṇā kāma-rūpeṇa kaunteya duṣpūreṇānalena ca
āvṛtam —covered;  jñānam —pure consciousness;  etena —by this;  jñāninaḥ —of the knower;  nitya-vairiṇā —eternal enemy;  kāma-rūpeṇa —in the form of lust;  kaunteya —O son of Kuntī;  duṣpūreṇa —never to be satisfied;  analena —by the fire;  ca —also.
TRANSLATION
Thus, a man's pure consciousness is covered by his eternal enemy in the form of lust, which is never satisfied and which burns like fire.
PURPORT
It is said in the  Manu-smrti  that lust cannot be satisfied by any amount of sense enjoyment, just as fire is never extinguished by a constant supply