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The Blessed Lord said It is desire, it is anger both of the ality of Rajas, all-devouring, all-sinful; know this as the foe here (in this world).

The Lord said: It is desire, it is anger, born of the quality of passion; all-devouring and most sinful. Know it to be the enemy here.

Krishna names the force Arjuna asked about. It is desire (kāma), and when desire is blocked it becomes anger. Both arise from rajas, the quality of restless passion. Desire is called mahāśana, a great devourer that is never satisfied, and mahāpāpmā, a great source of wrong. Krishna calls it the enemy in this world. The answer locates the cause of wrongdoing not in fate or an outside power but within the person. This makes the problem difficult, but also means it can be addressed through self-mastery.