The third class means kṛṣi-go-rakṣya-vāṇijyaṁ vaiśya-karma svabhāva-jam (BG 18.44). Third class means mercantile traders. They should produce food, enough kṛṣi, agricultural products, and go-rakṣya. Now we see instead of go-rakṣya . . . go-rakṣya means protection to the cows. Instead of protection to the cows, they are killing the cows. How you can have perfect society? Cows must be protected. It is so important animal. It is giving you the nectarean food, milk, and from milk you can save your children, you can save your diseased person. And how it is that you take the cow's milk and send it for slaughterhouse?
Oh, this is not . . . not at all human civilization. Here it is said go-rakṣya. You should give all protection to this important animal. Kṛṣṇa does not say that you should protect the pigs and hogs or other animals. He especially meant the cows, because cow is very important animal to the human society. If there are meat-eaters, they can kill other animals, but they should not kill the cow. This is, if you want actually perfect society. Kṛṣi-go-rakṣya-vāṇijyam (BG 18.44). And these persons, they let them produce enough food grains, and where there is no . . . there is scarcity of food grains, let them supply there. That is called trade. Vāṇijyam. Vāṇijyam.
But at the present moment, there are so many countries, they can produce profuse quantity of food grain. Sometimes they do it and throw it in the ocean for economic, what is called, balance. This is not good. Everyone should produce enough quantity of food grains, and if there is shortage, they should send there. Send there. In this way, the whole world should cooperate. There is United Nation, but what they are doing? Let them study Bhagavad-gītā how to make United Nation. That will be perfect. Not these short-sighted men with politics and diplomacy within the heart, they can bring all the nations united. That is not possible. Let them discuss Bhagavad-gītā. Let them discuss how perfect society can be established. Then there will be peace. And vaiśya-karma svabhāva-jam.
And paricaryātmakaṁ karma śūdrasyāpi svabhāva-jam (BG 18.44). And those who are not intelligent, to be trained up as a brahmin or a kṣatriya or a vaiśya, the fourth-class men, let them work these three other classes. Let them work. Paricaryātmakaṁ karma śūdrasyāpi svabhāva-jam. In this way the human society should be divided into four divisions, they should cooperate, and they should be trained up. Not a single man should remain unemployed. He must be engaged in some employment as a brāhmaṇa, as a kṣatriya, as a śūdra or as a vaiśya. Otherwise, idle brain will be devil's workshop. Therefore, in spite of so much educational propaganda in the Western countries, the young men are coming to become hippies. Because there is no proper training. Here is the hint, Bhagavad-gītā gives you. You train the students in that way, then there will be perfect society.