So śāstra says that this human form of life is not meant for this purpose. The human form of life is meant for tapasya: tapo divyaṁ yena śuddhyet sattva (SB 5.5.1). Satya means my existence. We have to purify our existence. Just like if you become feverish, you have to purify yourself from the feverish condition, come to the healthy condition, then you can enjoy life. You cannot enjoy life in diseased condition. That is not possible. Suppose you are feverish, you are given a nice foodstuff, rasagullā, but you will taste it bitter. You cannot enjoy it because on account of your fever the tongue is saturated with bile, and you taste sweet things as bitter. Similarly, we have got our senses—that is all right—but we cannot enjoy our senses in the diseased condition of material life.
Therefore Bhagavad-gītā says: sukham ātyantikaṁ yat tad atīndriyam grāhyam (BG 6.21). If you want happiness, even sense gratification, that is not possible when your senses are covered by these material elements. We have got our senses, that is a fact. We have got our desires, we have got our mind, we have got our other senses, but this is now covered by the material elements. This is called dress. Just like if you are simply dressed, and if you want to enjoy sense gratification, it is not possible. You have to undress yourself, you have to become naked yourself. Similarly, if you want to sense gratify, then you have to purify your this material existence. Sarvopādhi vinirmuktaṁ tat-paratvena nirmalam (CC Madhya 19.170). You have to become purified. Śuddhyed satya yeṇa brahma-saukhyam anantam (SB 5.5.1). If you purify yourself, then by that purified senses you enjoy brahma-sukha. Brahmā-saukhyaṁ anantam.