Kardama Muni desired to beget a child who would be a ray of the Supreme Personality of Godhead. One should beget a child who can perform the duties of Viṣṇu, otherwise there is no need to produce children. There are two kinds of children born of good fathers: one is educated in Kṛṣṇa consciousness so that he can be delivered from the clutches of māyā in that very life, and the other is a ray of the Supreme Personality of Godhead and teaches the world the ultimate goal of life. As will be described in later chapters, Kardama Muni begot such a child-Kapila, the incarnation of the Personality of Godhead who enunciated the philosophy of Sāṅkhya. Great householders pray to God to send His representative so that there may be an auspicious movement in human society. This is one reason to beget a child. Another reason is that a highly enlightened parent can train a child in Kṛṣṇa consciousness so that the child will not have to come back again to this miserable world. Parents should see to it that the child born of them does not enter the womb of a mother again. Unless one can train a child for liberation in that life, there is no need to marry or produce children. If human society produces children like cats and dogs for the disturbance of social order, then the world becomes hellish, as it has in this age of Kali. In this age, neither parents nor their children are trained; both are animalistic and simply eat, sleep, mate, defend, and gratify their senses. This disorder in social life cannot bring peace to human society. Kardama Muni explains beforehand that he would not associate with the girl Devahūti for the whole duration of his life. He would simply associate with her until she had a child. In other words, sex life should be utilized only to produce a nice child, not for any other purpose. Human life is especially meant for complete devotion to the service of the Lord. That is the philosophy of Lord Caitanya.
(Srimad Bhagavatam----3:22:19----purport).

Although the root of distress and happiness is the mind, intelligence and ego, a gross body is still required as an instrument for enjoyment. The gross body may change, but the subtle body continues to act. Unless the living entity gets another gross body, he will have to continue in a subtle body, or a ghostly body. One becomes a ghost when the subtle body acts without the help of the instrumental gross body. As stated in this verse, śayānam imam utsṛjya śvasantam. The gross body may lie on a bed and rest, and even though the machinery of the gross body is working, the living entity may leave, go into a dream, and return to the gross body. When he returns to the body, he forgets his dream. Similarly, when the living entity takes on another gross body, he forgets the present gross body. The conclusion is that the subtle body—mind, intelligence and ego—creates an atmosphere with desires and ambitions that the living entity enjoys in the subtle body. Actually the living entity is in the subtle body, even though the gross body apparently changes and even though he inhabits the gross body on various planets. All the activities performed by the living entity in the subtle body are called illusory because they are not permanent. Liberation means getting out of the clutches of the subtle body. Liberation from the gross body simply involves the transmigration of the soul from one gross body to another. When the mind is educated in Kṛṣṇa consciousness, or higher consciousness in the mode of goodness, one is transferred either to the upper, heavenly planets or to the spiritual world, the Vaikuṇṭha planets. One therefore has to change his consciousness by cultivating knowledge received from Vedic instructions from the Supreme Personality of Godhead through the disciplic succession. If we train the subtle body in this life by always thinking about Kṛṣṇa, we will transfer to Kṛṣṇaloka after leaving the gross body. This is confirmed by the Supreme Personality of Godhead.
(Srimad Bhagavatam----3:29:61----purport).

In this verse the brāhmaṇas are given a position superior to that of the Supreme Lord. The idea is that the government should be conducted under the guidance of the brāhmaṇas. Although Ṛṣabhadeva recommended His eldest son, Bharata, as emperor of the earth, he still had to follow the instructions of the brāhmaṇas in order to govern the world perfectly. The Lord is worshiped as brahmaṇya-deva. The Lord is very fond of devotees, or brāhmaṇas. This does not refer to so-called caste brāhmaṇas, but to qualified brāhmaṇas. A brāhmaṇa should be qualified with the eight qualities mentioned in text 24, such as śama, dama, satya and titikṣā. The brāhmaṇas should always be worshiped. and under their guidance the ruler should discharge his duty and rule the citizens. Unfortunately, in this age of Kali, the executive is not selected by very intelligent people, nor is he guided by qualified brāhmaṇas. Consequently, chaos results. The mass of people should be educated in Kṛṣṇa consciousness so that according to the democratic process they can select a first-class devotee like Bharata Mahārāja to head the government. If the head of the state is headed by qualified brāhmaṇas, everything is completely perfect.
(Srimad Bhagavatam----5:5:21-22----purport).

The members of human society who strictly follow the principles of bhāgavata-dharma and live according to the instructions of the Supreme Personality of Godhead are called Āryans or ārya. A civilization of Āryans who strictly follow the instructions of the Lord and never deviate from those instructions is perfect. Such civilized men do not discriminate between trees, animals, human beings and other living entities. paṇḍitāḥ sama-darśinaḥ: (B.G.5:18) because they are completely educated in Kṛṣṇa consciousness, they see all living beings equally. Āryans do not kill even a small plant unnecessarily, not to speak of cutting trees for sense gratification. At the present moment, throughout the world, killing is prominent. Men are killing trees, they are killing animals, and they are killing other human beings also, all for sense gratification. This is not an Āryan civilization. As stated here, sthira-cara-sattva-kadambeṣv apṛthag-dhiyaḥ. The word apṛthag-dhiyaḥ indicates that Āryans do not distinguish between lower and higher grades of life. All life should be protected. All living beings have a right to live, even the trees and plants. This is the basic principle of an Āryan civilization. Apart from the lower living entities, those who have come to the platform of human civilization should be divided into a society of brāhmaṇas, kṣatriyas, vaiśyas and śūdras. The brāhmaṇas should follow the instructions of the Supreme Personality of Godhead as stated in Bhagavad-gītā and other Vedic literatures. The criterion must be guṇa and karma. In other words, one should acquire the qualities of a brāhmaṇa, kṣatriya, vaiśya or śūdra and act accordingly. This is the civilization accepted by the Āryans. Why do they accept it? They accept it because they are very much eager to satisfy Kṛṣṇa. This is perfect civilization.
(Srimad Bhagavatam----6:16:43----purport).

If one is determined to make spiritual advancement, he will not beget a child unless able to make that child a devotee. As stated in Śrīmad-Bhāgavatam (5.5.18), pitā na sa syāt: one should not become a father unless one is able to protect his child from mṛtyu, the path of birth and death. But where is there education about this? A responsible father never begets children like cats and dogs. Instead of being encouraged to adopt artificial means of birth control, people should be educated in Kṛṣṇa consciousness because only then will they understand their responsibility to their children. If one can beget children who will be devotees and be taught to turn aside from the path of birth and death (mṛtyu-saṁsāra-vartmani (B.G.9:3), there is no need of birth control. Rather, one should be encouraged to beget children. Artificial means of birth control have no value. Whether one begets children or does not, a population of men who are like cats and dogs will never make human society happy. It is therefore necessary for people to be educated spiritually so that instead of begetting children like cats and dogs, they will undergo austerities to produce devotees. This will make their lives successful.
(Srimad Bhagavatam----10:3:33----purport).

Lust is only the perverted reflection of the love of God which is natural for every living entity. But if one is educated in Kṛṣṇa consciousness from the very beginning, that natural love of God cannot deteriorate into lust. When love of God deteriorates into lust, it is very difficult to return to the normal condition. Nonetheless, Kṛṣṇa consciousness is so powerful that even a late beginner can become a lover of God by following the regulative principles of devotional service. So, from any stage of life, or from the time of understanding its urgency, one can begin regulating the senses in Kṛṣṇa consciousness, devotional service of the Lord, and turn the lust into love of Godhead—the highest perfectional stage of human life.
(Bhagavad-Gita----3:41----purport).

Although human society has different sections or subdivisions, all human beings belong to one species, and therefore we accept that they all have the ability to understand their constitutional position in connection with the Supreme Personality of Godhead, Viṣṇu. Śrī Caitanya Mahāprabhu confirms, jīvera "svarūpa" haya—kṛṣṇera nitya-dāsa: (CC.2:20:108). "Every living entity is an eternal part, an eternal servant, of the Supreme Personality of Godhead." Every living entity who attains the human form of life can understand the importance of his position and thus become eligible to become a devotee of Lord Kṛṣṇa. We take it for granted, therefore, that all humanity should be educated in Kṛṣṇa consciousness. Indeed, in all parts of the world, in every country where we preach the saṅkīrtana movement, we find that people very easily accept the Hare Kṛṣṇa mahā-mantra without hesitation. The visible effect of this chanting is that the members of the Hare Kṛṣṇa movement, regardless of their backgrounds, all give up the four principles of sinful life and come to an elevated standard of devotion.
(Sri Caitanya Caritamrta----1:12:73----purport).