Because this material life is all sinful life. Because everything belongs to Kṛṣṇa, and we are possessing things for my satisfaction. This is sinful. Criminal. Suppose if your property I use for my sense gratification, it is criminal. Similarly, everything belongs to Kṛṣṇa. Bhoktāraṁ yajña-tapasāṁ sarva-loka-maheśvaram (BG 5.29). Kṛṣṇa says, "I am the proprietor." So if you don't acknowledge that, if you use this world for your sense gratification, then you are criminal. Therefore it is said that you offer yajña, offer to Kṛṣṇa. Then you take it. Yajña-śiṣṭāśinaḥ santo mucyante sarva-kilbiṣaiḥ. You bring things... You have to eat. That's a fact. Kṛṣṇa is giving you opportunity of eating nice things: food grains, fruits, flowers, milk, so many things. So you prepare, offer to Kṛṣṇa. That is called yajña. Yajña means satisfaction of the Supreme Person. That is called yajña. So yajñārthe karmaṇo 'nyatra loko 'yaṁ karma-bandhanaḥ (BG 3.9). If you do not work for performing yajña, then you are becoming entangled. Yajñārthe karmaṇo 'nyatra loko 'yaṁ karma-bandhanaḥ. And if you perform yajña and then you enjoy... Tena tyaktena bhuñjīthāḥ (ISO 1). We require our, I mean to say, maintenance of life and soul. That is, that is a fact. But tena tyaktena bhuñjīthāḥ. You enjoy everything which is given to you as prasādam, as remnants, as mercy. This is Vaiṣṇava life. Vaiṣṇava life means they do not... What is this temple? The temple is they are being trained up how to accept the remnants of foodstuff of Kṛṣṇa. We don't cook for ourself. If we cook for ourself, then, as it is stated in the Bhagavad-gītā, it is said, ye pacanty ātma-kāraṇāt, bhuñjate te tv aghaṁ pāpāḥ (BG 3.13). They are simply eating sinful things.
And people are doing that. They do not offer to Kṛṣṇa, and they eat whatever they like. The result is that you have misused this opportunity of human life, to understand Kṛṣṇa and go back to home, back to Godhead, so that you'll be happy eternally. You'll be freed from this entanglement of bhūtvā bhūtvā pralīyate (BG 8.19). You enjoy one duration of life; again you have to give it up. Then you accept another duration of life. Bhūtvā bhūtvā pralīyate. This human life is meant for getting rid of this business, taking birth and dying, taking birth and dying. This is meant. This is... This opportunity's given, but if you do not use it properly, you use it as cats and dogs and hogs, then the..., by nature's law, you will get the body next life cats and dogs and hogs. You eat even stool. Because you had no discrimination in eating, the "All right, you can now eat..." the pig's body, hog's body you get, and eat even up to stool. That opportunity is given. And you have sex life with your mother and sister. You see hog's life. They have no sex discrimination. They do not discriminate, "It is..., she is my mother," or "She is my sister." No. So this is hog's life. Therefore śāstra says that "Don't be foolish to lead a life like hogs." Nāyaṁ deho deha-bhājāṁ nṛloke kaṣṭān kāmān arhate viḍ-bhujāṁ ye (SB 5.5.1). The material civilization should not be like that. What is that? Now, simply for sense gratification. Nāyaṁ deho deha-bhājāṁ nṛloke kaṣṭān kāmān. That sense gratification is also not very easy. People are working so hard. They are stealing even, risking life. So many things they are... This is not very easygoing life. Kaṣṭān kāmān. Everything is studied by śāstra. Arhate viḍ-bhujāṁ ye. This kind of life is meant for the hogs.
So human life is not meant for like that. Human life is meant for tapasya. Tapo divyaṁ putrakā yena śuddhyet sattvam, śuddhyet (SB 5.5.1). You have to purify your existence. Now our existence is not purified. We get this contaminated body and change it; again another contaminated body, another... Just like one man is suffering from disease: one contamination, then another contamination, another... This is not life. You purify yourself. And that purification begins when you accept the life of austerities, tapaḥ, tapasya. Tapasya means voluntarily accepting some... This is not inconvenience. Just like in our society it is enjoined, the students, they should voluntarily accept the principle: no illicit sex life, no meat-eating, no fish-eating, no, nothing of the sort, no intoxication, and no gambling. This is tapasya. Especially for these European and American students, they are, from the beginning of their life, they are accustomed to these habits. But they have voluntarily given up on my word. And that is guru's business. So to purify so that he may be saved from this illusion—he must be purified—so this little inconvenience for higher happiness, that is desired, that is required.
Tapo divyaṁ putrakā yena śuddhyet sattvaṁ yasmād brahma-saukhyam anantam (SB 5.5.1). Anantam. You are after happiness, but you do not know how to enjoy happiness. That you do not know. That is stated in the Bhagavad-gītā. Sukham ātyantikaṁ yat tad atīndriya-grāhyam (BG 6.21). Atīndriya. Not these false senses. We want sense enjoyment, but not these covered senses. We are spiritual. We have got spiritual body. That body is now covered with this material garment; therefore it is covered. The senses are covered. With covered senses, you cannot enjoy actually. The senses must be open. That means you can enjoy life when your senses are open, not covered by this material body. That is recommended. One who is interested in Kṛṣṇa consciousness... It is said, sarvopādhi-vinirmuktaṁ tat-paratvena nirmalam (CC Madhya 19.170). Nirmalam means purified. You have to become purified. And sarvopādhi-vinirmuktam. Now we are in, covered, by this material body, means I am covered by so many designations: "I am American," "I am Indian," "I am Hindu," "I am Muslim." These are all coverings, material. So we have to get free, freedom from this covering. You should not think that "I am American" or "Indian" or this or that. As Caitanya Mahāprabhu advised, jīvera svarūpa haya nitya-kṛṣṇa-dāsa (Cc. Madhya 20.108-109). When you understand simply that "I am eternal servant of Kṛṣṇa," that is sarvopādhi-vinirmuktam (CC Madhya 19.170), nirmalam. And with that conception of life, hṛṣīkeṇa hṛṣīkeśa-sevanaṁ bhaktir ucyate. Hṛṣīkeṇa means when your senses are now clean, without any covering, then with that senses, when you try to satisfy Kṛṣṇa, hṛṣīkeṇa hṛṣīkeśa-sevanam... (CC Madhya 19.170).
Kṛṣṇa's name is another, Hṛṣīkeśa. Senayor ubhayor madhye hṛṣīkeśa sthāpaya me acyuta. The Hṛṣīkeśa name is there. Hṛṣīkeśa means actually Kṛṣṇa is the master of the senses. We are not proprietor of the senses. Kṛṣṇa is the proprietor of the senses. So when our senses are purified and we apply them... After all, our senses are employed for satisfaction of somebody, myself or somebody else. Actually, somebody else. That is kāma, krodha, lobha, moha, mātsarya. That is illusion. We are not serving ourself; we are serving our lusty desires, kāma, krodha. I am angry; therefore I am killing somebody. So that is not mine. But I am servant of the anger. I am servant; I am not master. If I would have been master, then I could control my anger. But I am not. I am servant of anger. I am servant of lusty desires. So I am servant, but this servitude should be transferred to Kṛṣṇa. That is perfection of life.