Brāhmaṇa means Vaiṣṇava. After one becomes a brāhmaṇa, the next stage of development in human society is to become a Vaiṣṇava. People in general must be guided to the destination or goal of life, and therefore they must understand Viṣṇu, the Supreme Personality of Godhead.
(Srimad Bhagavatam-----10:8:6-----purport).

A so-called brāhmaṇa who is born in the family of brāhmaṇas but performs activities aimed against the Vaiṣṇavas cannot be accepted as a brāhmaṇa, because brāhmaṇa means Vaiṣṇava and Vaiṣṇava means brāhmaṇa. One who has become a devotee of the Lord is also a brāhmaṇa.
(Srimad Bhagavatam-----3:16:4-----purport).

The so-called brāhmaṇas are no longer interested in understanding the nature of the Supreme Brahman, although a brāhmaṇa means one who has attained knowledge about Brahman.
(Srimad Bhagavatam-----4:2:26-----purport).

Only the impure conditioned living being cannot derive any pleasure from the senses, but being illusioned by false pleasures of the senses, he becomes servant of the senses. Therefore, we need His protection for our own interest. The Lord is the protector of cows and the brahminical culture. A society devoid of cow protection and brahminical culture is not under the direct protection of the Lord, just as the prisoners in the jails are not under the protection of the king but under the protection of a severe agent of the king. Without cow protection and cultivation of the brahminical qualities in human society, at least for a section of the members of society, no human civilization can prosper at any length. By brahminical culture, the development of the dormant qualities of goodness, namely truthfulness, equanimity, sense control, forbearance, simplicity, general knowledge, transcendental knowledge, and firm faith in the Vedic wisdom, one can become a brāhmaṇa and thus see the Lord as He is.
(Srimad Bhagavatam-----1:14:34-----purport).

Human civilization means to advance the cause of brahminical culture, and to maintain it, cow protection is essential. There is a miracle in milk, for it contains all the necessary vitamins to sustain human physiological conditions for higher achievements. Brahminical culture can advance only when man is educated to develop the quality of goodness, and for this there is a prime necessity of food prepared with milk, fruits and grains. Mahārāja Parīkṣit was astonished to see that a black śūdra, dressed like a ruler, was mistreating a cow, the most important animal in human society.
(Srimad Bhagavatam-----1:16:4-----purport).

The age of Kali means mismanagement and quarrel. And the root cause of all mismanagement and quarrel is that worthless men with the modes of lower-class men, who have no higher ambition in life, come to the helm of the state management. Such men at the post of a king are sure to first hurt the cow and the brahminical culture, thereby pushing all society towards hell. Mahārāja Parīkṣit, trained as he was, got the scent of this root cause of all quarrel in the world. Thus he wanted to stop it in the very beginning.
(Srimad Bhagavatam-----1:16:4-----purport).

The bull is the emblem of the moral principle, and the cow is the representative of the earth. When the bull and the cow are in a joyful mood, it is to be understood that the people of the world are also in a joyful mood. The reason is that the bull helps production of grains in the agricultural field, and the cow delivers milk, the miracle of aggregate food values. The human society, therefore, maintains these two important animals very carefully so that they can wander everywhere in cheerfulness. But at the present moment in this age of Kali both the bull and the cow are now being slaughtered and eaten up as foodstuff by a class of men who do not know the brahminical culture. The bull and the cow can be protected for the good of all human society simply by the spreading of brahminical culture as the topmost perfection of all cultural affairs. By advancement of such culture, the morale of society is properly maintained, and so peace and prosperity are also attained without extraneous effort. When brahminical culture deteriorates, the cow and bull are mistreated, and the resultant actions are prominent by the following symptoms.
(Srimad Bhagavatam-----1:16:18-----purport).

The principal sign of the age of Kali is that lower-caste śūdras, i.e., men without brahminical culture and spiritual initiation, will be dressed like administrators or kings, and the principal business of such non-kṣatriya rulers will be to kill the innocent animals, especially the cows and the bulls, who shall be unprotected by their masters, the bona fide vaiśyas, the mercantile community. In the Bhagavad-gītā (18.44), it is said that the vaiśyas are meant to deal in agriculture, cow protection and trade. In the age of Kali, the degraded vaiśyas, the mercantile men, are engaged in supplying cows to slaughterhouses. The kṣatriyas are meant to protect the citizens of the state, whereas the vaiśyas are meant to protect the cows and bulls and utilize them to produce grains and milk. The cow is meant to deliver milk, and the bull is meant to produce grains. But in the age of Kali, the śūdra class of men are in the posts of administrators, and the cows and bulls, or the mothers and the fathers, unprotected by the vaiśyas, are subjected to the slaughterhouses organized by the śūdra administrators.
(Srimad Bhagavatam-----1:17:1-----purport).

By cultural standing, the human beings were not at all subjected to the deluding energy. Such strong men of character were competent enough to get away from the clutches of māyā. But gradually, as the basic principles of brahminical culture, namely austerity, cleanliness, mercy and truthfulness, became curtailed by proportionate development of pride, attachment for women and intoxication, the path of salvation or the path of transcendental bliss retreated far, far away from human society. With the progression of the age of Kali, people are becoming very proud, and attached to women and intoxication. By the influence of the age of Kali, even a pauper is proud of his penny, the women are always dressed in an overly attractive fashion to victimize the minds of men, and the man is addicted to drinking wine, smoking, drinking tea and chewing tobacco, etc. All these habits, or so-called advancement of civilization, are the root causes of all irreligiosities, and therefore it is not possible to check corruption, bribery and nepotism. Man cannot check all these evils simply by statutory acts and police vigilance, but he can cure the disease of the mind by the proper medicine, namely advocating the principles of brahminical culture or the principles of austerity, cleanliness, mercy and truthfulness. Modern civilization and economic development are creating a new situation of poverty and scarcity with the result of blackmailing the consumer's commodities.
(Srimad Bhagavatam-----1:17:24-----purport).

Progressive human civilization is based on brahminical culture, God consciousness and protection of cows. All economic development of the state by trade, commerce, agriculture and industries must be fully utilized in relation to the above principles, otherwise all so-called economic development becomes a source of degradation. Cow protection means feeding the brahminical culture, which leads towards God consciousness, and thus perfection of human civilization is achieved. The age of Kali aims at killing the higher principles of life, and although Mahārāja Parīkṣit strongly resisted the domination of the personality of Kali within the world, the influence of the age of Kali came at an opportune moment, and even a strong king like Mahārāja Parīkṣit was induced to disregard the brahminical culture due to a slight provocation of hunger and thirst. Mahārāja Parīkṣit lamented the accidental incident, and he desired that all his kingdom, strength and accumulation of wealth would be burned up for not being engaged in brahminical culture, etc.
(Srimad Bhagavatam-----1:19:3-----purport).

Where wealth and strength are not engaged in the advancement of brahminical culture, God consciousness and cow protection, the state and home are surely doomed by Providence. If we want peace and prosperity in the world, we should take lessons from this verse; every state and every home must endeavor to advance the cause of brahminical culture for self-purification, God consciousness for self-realization and cow protection for getting sufficient milk and the best food to continue a perfect civilization.
(Srimad Bhagavatam-----1:19:3-----purport).

Foolish men forget this sure fact of death and neglect the duty of preparing themselves for going back to Godhead. They spoil their lives in animal propensities to eat, drink, be merry and enjoy. Such an irresponsible life is adopted by the people in the age of Kali because of a sinful desire to condemn brahminical culture, God consciousness and cow protection, for which the state is responsible. The state must employ revenue to advance these three items and thus educate the populace to prepare for death. The state which does so is the real welfare state. The state of India should better follow the examples of Mahārāja Parīkṣit, the ideal executive head, than to imitate other materialistic states which have no idea of the kingdom of Godhead, the ultimate goal of human life. Deterioration of the ideals of Indian civilization has brought about the deterioration of civic life, not only in India but also abroad.
(Srimad Bhagavatam-----1:19:4-----purport).

Though a person be even the most sinful man, he can at once be purified by systematic contact with a pure Vaiṣṇava. A Vaiṣṇava, therefore, can accept a bona fide disciple from any part of the world without any consideration of caste and creed and promote him by regulative principles to the status of a pure Vaiṣṇava who is transcendental to brahminical culture. The system of caste, or varṇāśrama-dharma, is no longer regular even amongst the so-called followers of the system. Nor is it now possible to reestablish the institutional function in the present context of social, political and economic revolution.
(Srimad Bhagavatam-----1:19:4-----purport).

The cause of such gross ignorance is constant engagement by the materialistic man in the matter of artificially increasing material demands. To realize the Supreme Personality of Godhead, one has to purify the materialistic senses by devotional service. The mode of goodness, or the brahminical culture recommended in the Vedic literatures, is helpful to such spiritual realization, and thus the jñāna-śakti stage of the conditioned soul is comparatively better than the other two stages, namely dravya-śakti and kriyā-śakti. The whole material civilization is manifested by a huge accumulation of materials, or, in other words, raw materials for industrial purposes, and the industrial enterprises (kriyā-śakti) are all due to gross ignorance of spiritual life. In order to rectify this great anomaly of materialistic civilization, based on the principles of dravya-śakti and kriyā-śakti, one has to adopt the process of devotional service of the Lord by adoption of the principles of karma-yoga, mentioned in the Bhagavad-gītā (9.27) as follows:
yat karoṣi yad aśnāsi
yaj juhoṣi dadāsi yat
yat tapasyasi kaunteya
tat kuruṣva mad-arpaṇam
"O son of Kuntī, all that you do, all that you eat, all that you offer and give away, as well as all austerities that you may perform, should be done as an offering unto Me."
(Srimad Bhagavatam-----2:5:24-----purport).

Kṣatriyas are specifically meant to maintain the brāhmaṇas because if the brāhmaṇas are protected, then the head of civilization is protected. Brāhmaṇas are supposed to be the head of the social body; if the head is clear and has not gone mad, then everything is in proper position. The Lord is described thus: namo brahmaṇya-devāya go-brāhmaṇa-hitāya ca. The purport of this prayer is that the Lord specifically protects the brāhmaṇas and the cows, and then He protects all other members of society (jagad-dhitāya). It is His will that universal welfare work depends on the protection of cows and brāhmaṇas; thus brahminical culture and cow protection are the basic principles for human civilization. Kṣatriyas are especially meant to protect the brāhmaṇas, as is the supreme will of the Lord: go-brāhmaṇa-hitāya ca. As, within the body, the heart is a very important part, so the brāhmaṇas are also the important element in human society. The kṣatriyas are more like the whole body; even though the whole body is bigger than the heart, the heart is more important.
(Srimad Bhagavatam-----3:22:3-----purport).

The word brahma-tejasā, used in this verse, is significant. In those days, brāhmaṇas were so powerful that simply by desiring and by chanting a Vedic mantra, they could accomplish very wonderful effects. But in the present age of degradation there are no such brāhmaṇas. According to the pāñcarātrika system, in this age the entire population is supposed to consist of śūdras because the brahminical culture has been lost. But if anyone displays the signs of understanding Kṛṣṇa consciousness, he should be accepted, according to Vaiṣṇava smṛti regulations, as a prospective brāhmaṇa and should be given all facilities to achieve the highest perfection. The most magnanimous gift of Lord Caitanya's is that the highest perfection of life is available in this fallen age if one simply adopts the process of chanting Hare Kṛṣṇa, which is able to bring about the fulfillment of all activities in self-realization.
(Srimad Bhagavatam-----4:4:34-----purport).

Brāhmaṇas, the topmost section of human society, are mostly devotees. They are generally unaware of the happenings within the material world because they are always busy in their activities for spiritual advancement. Nonetheless, when there is a calamity in human society, they cannot remain impartial. If they do not do something to relieve the distressed condition of human society, it is said that due to such neglect their spiritual knowledge diminishes. Almost all the sages go to the Himalayas for their personal benefit, but Prahlāda Mahārāja said that he did not want liberation alone. He decided to wait until he was able to deliver all the fallen souls of the world. In their elevated condition, the brāhmaṇas are called Vaiṣṇavas. There are two types of brāhmaṇas—namely, brāhmaṇa-paṇḍita and brāhmaṇa-vaiṣṇava. A qualified brāhmaṇa is naturally very learned, but when his learning is advanced in understanding the Supreme Personality of Godhead, he becomes a brāhmaṇa-vaiṣṇava. Unless one becomes a Vaiṣṇava, one's perfection of brahminical culture is incomplete.
(Srimad Bhagavatam-----4:14:41-----purport).