Just like yesterday in the evening, when we were talking with Dr. Schumacher, so they were supporting that "Why should you kill any animal who is coming to . . . if you are determined not to kill . . ." We were talking of not killing, that why should you kill one animal who is coming to attack? No. You must kill. That is necessity. You should not go to the forest to find out some living entities, living beings, to kill. That is not your business. That is hiṁsa. But if a tiger comes to attack you, you must kill. That is self-defense. And that is not hiṁsa.
So a devotee knows, a Kṛṣṇa conscious person knows when to kill and when not to kill. But it is not that because we accept not killing, therefore in every case killing should be stopped. No. If there is necessity, killing should be accepted. Therefore Arjuna decided not to kill, not to fight. And Kṛṣṇa says that, "This is anārya-juṣṭam. This kind of decision is made by the uncivilized rascal." Anārya-juṣṭam asvargyam akīrti-karam (BG 2.2). So many things He says. Asvargyam. Because the aim of human life should be to make progress. That is called ārya, progressive march.
Now we have got this human form of body, progressing from the lowest species of life in aquatics, then trees, plants, insects, birds, beasts, 8,400,000 . . . now I have got this civilized form of body. Then the . . . my endeavor should be how to make further progress. The further progress is described in the Bhagavad-gītā, that you can go to the higher planetary system. Ūrdhvaṁ gacchanti sattva-sthāḥ (BG 14.18). Ūrdhvam, higher planetary system.
Madhye tiṣṭhanti rājasaḥ. Madhye, in the middle planetary system, those who are contaminated with the passion quality, they remain. And jaghanya-guṇa-vṛtti-sthā adho gacchanti tāmasaḥ: and those who are miscreants, jaghanya-guṇa-vṛtti-sthāḥ, most hatefully accustomed, these hatefully accustomed, illicit sex, meat-eating, gambling, intoxication . . . these are habits of hateful nature. So jaghanya-guṇa-vṛtti-sthāḥ adho gacchanti tāmasaḥ, they go down. Either become animals or . . . there are seven kinds of lower planetary systems: tala, atala, nitala, pātala, talātala, rasātala, like that.
So ārya means must make progress. Anārya means one who does not know what is progress of life. They think there is no life after death. "So I have got this life now. Let me enjoy my senses to the best capacity." This is anārya, demon. "Eat, drink, be merry and enjoy." Because as soon as the body will be finished, the senses also will be finished. Now let me use the senses. So anārya, they do not know that there is life after death.