The Deity said: It is desire, it is wrath, born from the quality of passion; it is very ravenous, very sinful. Know that that is the foe in this world. As fire is enveloped by smoke, a mirror by dust, the foetus by the womb, so is this enveloped by desire. Knowledge, O son of Kunti! is enveloped by this constant foe of the man of knowledge, in the shape of desire, which is like a fire and insatiable.