39. Here, the inimical nature of kām or lust is being made even more explicit by Lord Krishna. kām means "desire," duṣhpūreṇa means "insatiable," anala means "inexhaustible." Desire overpowers the discriminatory power of the wise and lures them to fulfill it. However, the more they attempt to dowse the fire of desire, the more strongly it burns. The Buddha states:
"Desire burns like an unquenchable fire, which never brings happiness to anyone. The wise renounce it, knowing it to be the root of misery." But those who do not understand this secret waste away their life in the futile pursuit of trying to satiate their lust.
40. By revealing the locations where lust resides, Shree Krishna now indicates that there is a method of controlling it. The fortress of the enemy must be spotted before one can lay siege on it. In this verse, Shree Krishna states that the senses, mind, and intellect are the places from where lust exercises its dominion over the soul. Under the sway of lust, the sense objects are desired by the senses, the senses infatuate the mind, the mind misleads the intellect, and the intellect loses its discriminatory powers. When the intellect is clouded, the living being is deluded to become a slave of lust and will do anything to satiate it.
These instruments—senses, mind, and intellect—are not bad in themselves. They were given to us for the purpose of achieving God-realization, but we have permitted lust in its many forms to lay siege on them. Now, we have to use the same senses, mind, and intellect to uplift ourselves. In the following verses, Shree Krishna explains how to do that.
41. Now, Shree Krishna explains how to overcome lust, the root of all evil, which is so pernicious to human consciousness. Having identified the repositories of lust, Shree Krishna asks Arjun, at the outset, to curb the desires of the senses. Permitting them to arise is the cause of our miseries, while eliminating them is the way to peace.
Consider the following example. Ramesh and Dinesh were two fellow students sharing the same room in the hostel. At 10 pm at night, Ramesh developed the desire to smoke cigarettes. He said, "I am getting the urge to smoke." Dinesh replied, "It is so late at night. Forget about cigarettes and go to sleep." "No…no…I will not be able to sleep until I puff the tobacco," said Ramesh. Dinesh went to sleep, but Ramesh went out in search of cigarettes. The shops nearby had closed. It took him two hours until he finally returned to the hostel with the cigarette and had a smoke.
In the morning, Dinesh asked him, "Ramesh, when did you sleep at night?" "At midnight." "Really! That means you remained agitated for cigarettes for two hours and when you had your puffs, you returned to the same state that you were in at 10 pm." "What do you mean by that?" asked Ramesh. "Look, at 10 pm you did not have any desire for cigarettes, and you were peaceful. Then you yourself created the desire for them. From 10 pm to midnight, you remained agitated for cigarettes. Finally, when you smoked them, the disease, which you had created, went away, and you got to sleep. I, on the other hand, did not create any desire, and slept peacefully at 10 pm itself."
In this way, we create desires for the objects of the senses of the body, and then become agitated by them. When we get the cherished object, the disease of our own creation gets eradicated, and we think of it as happiness." However, if we think of ourselves as the soul and our only purpose is happiness of the soul, then it becomes easier to renounce such material desires. Shree Krishna tells Arjun to bring the senses under control, thereby slaying the lust residing in them. To accomplish this we must use the higher instruments given by God to us, as stated in the next verse.
42. An inferior entity can be controlled by its superior entity. Shree Krishna explains the gradation of superiority amongst the instruments God has provided to us. He describes that the body is made of gross matter; superior to it are the five knowledge-bearing senses (which grasp the perceptions of taste, touch, sight, smell, and sound); beyond the senses is the mind; superior to the mind is the intellect, with its ability to discriminate; but even beyond the intellect is the divine soul.
This knowledge of the sequence of superiority amongst the senses, mind, intellect, and soul, can now be used for rooting out lust, as explained in the final verse of this chapter.
43. In conclusion, Shree Krishna emphasizes that we should slay this enemy called lust through knowledge of the self. Since the soul is a part of God, it is divine in nature. Thus, the divine bliss it seeks can only be attained from a divine subject, while the objects of the world are all material. These material objects can never fulfill the innate longing of the soul and so it is futile to create desires for them. We must exert and train the intellect to think in this manner, and then use it to control the mind and the senses.
This is explained very beautifully in the Kaṭhopaniṣhad with the help of the model of a chariot:
The Upaniṣhads say there is a chariot, which has five horses pulling it; the horses have reins in their mouths, which are in the hands of a charioteer; a passenger is sitting at the back of the chariot. Ideally, the passenger should instruct the charioteer, who should then control the reins and guide the horses in the proper direction. However, in this case, the passenger has gone to sleep, and so the horses are holding sway.
In this analogy, the chariot is the body, the horses are the five senses, the reins in the mouth of the horses is the mind, the charioteer is the intellect, and the passenger seated behind is the soul residing in the body. The senses (horses) desire pleasurable things. The mind (reins) is not exercising restraint on the senses (horses). The intellect (charioteer) submits to the pull of the reins (mind). So in the materially bound state, the bewildered soul does not direct the intellect in the proper direction. Thus, the senses decide the direction where the chariot will go. The soul experiences the pleasures of the senses vicariously, but these do not satisfy it. Seated on this chariot, the soul (passenger) is moving around in this material world since eternity.
However, if the soul wakes up to its higher nature and decides to take a proactive role, it can exercise the intellect in the proper direction. The intellect will then govern the lower self—the mind and the senses—and the chariot will move in the direction of eternal welfare. In this way, the higher self (soul) must be used to control the lower self (senses, mind, and, intellect).