Bhagwad Gita
Chapter 3, Verse 39
आवृतं ज्ञानमेतेन ज्ञानिनो नित्यवैरिणा।
कामरूपेण कौन्तेय दुष्पूरेणानलेन च।।3.39।।
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.