to control senses

Therefore in the Vedanta-sūtra it is said, athato brahma-jijnasa: "Now inquire about... Sit down about... Sit down quietly and inquire about the necessity, or the aim, of life." That is explained in the Srimad-Bhagavatam: jivasya tattva-jijnasa nartho yas ceha karmabhiḥ, kamasya nendriya-pritiḥ [SB 1.2.10]. Kamasya nendriya, kama. Here it is called kama. Kama means lust. So because we have got this body, therefore we must have some kama. That is a fact. You cannot avoid it. Lusty desire there is, and for the upkeep of the body the lusty desires may be fulfilled. But don't become lusty which is duspūram, which is never to be fulfilled. So kamasya na indriya-pritiḥ. Just like lusty desires, generally it is with reference to sex life. So sex life is required for the physiological condition of the body. That is nature's way. Or by giving birth to some nice children, that sex life is required. Otherwise, why God has made the arrangement of sex? There is need, but not duspūram. Kamasya na indriya-pritiḥ: "Don't use it for sense gratification." You use it to fulfill the real purpose. So these lusty desires, unless you live a very regulated life, then it will be duspūram, it will be never be fulfilled-always desire, always desire, always desire. So these demons, they accept the shelter of lusty desire which will never be fulfilled, will never be satiated.    (More...)