Actually, we are taking so much advantages. So from the cows, the milk. And from the milk we can make hundreds of vitaminous foodstuff. Hundreds. They're all palatable. So such a nice animal, faithful, peaceful and beneficial. After taking milk from it, if we kill, does it look very well? Even after the death, the cows supply the skin for your shoes. It is so beneficial. You see. Even after death.
While living, he gives you nice milk. You cannot reject milk from the human society. As soon as there is a child born, milk immediately required. Old man, milk is life. Diseased person, milk is life. Invalid, milk is life. So therefore Kṛṣṇa is teaching by His practical demonstration how He loves this innocent animal, cow.
So human society should develop brahminical culture on the basis of protecting cows. The brahmin cannot take any other food except it is made of milk preparation. That develops the finer tissues of the brain. You can understand in subtle matters, in philosophy, in spiritual science. Just like in a scientific college, not ordinary man can understand the scientific intricacies.
They require some preliminary qualification to enter into the scientific college. They require some preliminary qualification to enter into the law college, in the postgraduate classes. Similarly, to understand the subtle or finer implications of spiritual science, one has to become brahmin. Without becoming brahmin it is not possible.
Therefore in the Bhagavad-gītā it is said, cātur-varṇyaṁ mayā sṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13). There are four classes of men created by God: cātur-varṇyaṁ. How they are divided? How the classification is made? Guṇa-karma-vibhāgaśaḥ, by classification of quality and work. Not by birth. In India, of course, this classification of guṇa-karma-vibhāgaśaḥ was originally planned from the Vedic age. But later on, a class of men, without any qualification, without any practical work, they claimed that "I belong to such-and-such class." Therefore India's falldown was inevitable.
So Bhagavad-gītā says, "Not like that." Bhagavad-gītā says that these classes of men, cātur-varṇyaṁ—the brahminical class, the kṣatriya class, the vaiśya class and the śūdra class—is everywhere. Not only in India, but also throughout the whole universe, in every country, in every nation, in every society, there must be some people who have brahminical tendency. Just like from your country, we have picked up some boys and girls who are inclined to adopt this way of life.
So this Kṛṣṇa consciousness movement is simply picking up where there are brahminical class of boys, girls, men. Not that we are taking account, "Oh, who is your father? Is your father a brahmin?" No. We don't take account. His father may be anything, it doesn't matter. But if he has got tendency to accept this Kṛṣṇa consciousness, we immediately welcome, "Come on."