One can very easily understand how difficult and insurmountable the path of sense gratification is. Not knowing what the path of sense gratification is, one becomes implicated in the repetition of birth and accepts different types of bodies again and again. Thus one suffers in material existence. In this life one may think that he is very happy being an American, Indian, Englishman or German, but in the next life one has to accept another body among 8,400,000 species. The next body has to be immediately accepted according to karma. One will be forced to accept a certain type of body, and protesting will not help. That is the stringent law of nature. Due to the living entity's ignorance of his eternal blissful life, he becomes attracted to material activities under the spell of māyā. In this world, he can never experience happiness, yet he works very hard to do so. This is called māyā.
(Srimad Bhagavatam----5:13:1----purport).

When contraceptive methods are taken, why don't they act? Why is a child sometimes produced so that the father and mother have to kill it in the womb? We must conclude that our arrangement of so-called scientific knowledge cannot determine what will take place; what is enacted actually depends on the supreme will. It is by the supreme will that we are situated in certain conditions in terms of family, community and personality. These are all arrangements of the Supreme Lord according to our desires under the spell of māyā, illusion. In devotional life, therefore, one should not desire anything, since everything depends on the Supreme Personality of Godhead.
(Srimad Bhagavatam----6:15:4----purport).

One who wants to separate the Lord's absolute name, form and qualities from the Lord Himself must be understood to be lacking in absolute knowledge. A pure devotee knows that when he chants the transcendental name "Kṛṣṇa," Śrī Kṛṣṇa is present as transcendental sound. He therefore chants with full respect and veneration. When he sees the forms of Śrī Kṛṣṇa, he does not see anything different from the Lord. If one sees otherwise, he must be considered untrained in absolute knowledge. This lack of absolute knowledge is called māyā. One who is not Kṛṣṇa conscious is ruled by the spell of māyā under the control of a duality in knowledge. In the Absolute, all manifestations of the Supreme Lord are nondual, just as the multifarious forms of Viṣṇu, the controller of māyā, are nondual. Empiric philosophers who pursue the impersonal Brahman accept only the knowledge that the personality of the living entity is not different from the personality of the Supreme Lord, and mystic yogīs who try to locate the Paramātmā accept only the knowledge that the pure soul is not different from the Supersoul.
(Sri Caitanya Caritamrta----1:2:11----purport).

Actually, the living entity is not his material body: he is a spirit soul. He has a spiritual need to be eternally blissful and full of knowledge, but unfortunately he identifies himself with the body, sometimes as a human being, sometimes as an animal, sometimes a tree, sometimes an aquatic, sometimes a demigod, and so on. Thus with each change of body he develops a different type of consciousness with different types of activities and thus becomes increasingly entangled in material existence, transmigrating perpetually from one body to another. Under the spell of māyā, or illusion, he does not consider the past or future but is simply satisfied with the short life span that he has gotten for the present. To eradicate this illusion, Śrī Caitanya Mahāprabhu has brought the saṅkīrtana movement, and He requests everyone to accept and distribute it. A person who is actually a follower of Śrīla Bhaktivinoda Ṭhākura must immediately accept the request of Lord Caitanya Mahāprabhu by offering respectful obeisances unto His lotus feet and thus beg from Him the Hare Kṛṣṇa mahā-mantra. If one is fortunate enough to beg from the Lord this Hare Kṛṣṇa mahā-mantra, his life is successful.
(Sri Caitanya Caritamrta----1:9:6----purport).

In this connection, Śrīla Bhaktivinoda Ṭhākura, in his Amṛta-pravāha-bhāṣya, gives this short note: "Śrī Advaita Ācārya is one of the important trunks of the bhakti-kalpataru, or desire tree of devotional service. Lord Śrī Caitanya Mahāprabhu, as a gardener, poured water on the root of the bhakti tree and thus nourished all its trunks and branches. But nevertheless, under the spell of māyā, the most unfortunate condition of a living entity, some of the branches, not accepting the gardener who poured water on them, considered the trunk the only cause of the great bhakti-kalpataru. In other words, the branches or descendants of Advaita Ācārya who considered Advaita Ācārya the original cause of the devotional creeper, and who thus neglected or disobeyed the instructions of Śrī Caitanya Mahāprabhu, deprived themselves of the effect of being watered and thus dried up and died. It is further to be understood that not only the misguided descendants of Advaita Ācārya but anyone who has no connection with Caitanya Mahāprabhu—even if he is independently a great sannyāsī, learned scholar or ascetic—is like a dead branch of a tree."
(Sri Caitanya Caritamrta----1:12:73----purport).

Forgetfulness of this transcendental relationship between the living entity and the Personality of Godhead has created a false sense of everyone's being a miniature Kṛṣṇa, who tries to enjoy the world to his best capacity, while overlooking the transcendental service of the Absolute Truth, the Personality of Godhead, the complete whole and the origin of all. This kind of work is done under the spell of the modes of material nature, called māyā, or the illusory energy. Actually, the living entity has no capacity to lord it over the forces of nature. The living entity becomes subjugated by the modes of nature as soon as he tries to put himself into the position of Śrī Kṛṣṇa, the supreme enjoyer—under a false egoistic sense, since he is constitutionally unable to do so, any more than the hands, legs, eyes, and so on can individually function as a complete, whole body. The living entity therefore undergoes many difficulties under the pretense of being an enjoyer. So to get rid of all these troubles and difficulties that we suffer due to our work, we have to adopt the process of karma-yoga.
(Message of Godhead).

The Māyāvādīs try to imitate Śrīpād Śaṅkarācārya. Pretending to be orthodox, they reject the truth that the jīva is part and parcel of Parabrahman, the Supreme Lord. They also deny the fact that it is only the part and parcel aspect of Parabrahman (the jīva) and not Parabrahman Himself who falls under the spell of māyā. And worst of all, they deny that Parabrahman is none other than the Supreme Personality of Godhead. According to their lop-sided argument, when the jīva attains mukti (liberation) he merges into the impersonal Brahman and loses his individual identity. By this logic, when the Supreme Lord, the Parabrahman, incarnates in this material world or appears in the Deity form, He becomes an ordinary jīva. Thus the foolish Māyāvādīs draw a distinction between the Lord and His form, and in this way they commit great offences against Him.
(Renunciation Through Wisdom).

He is realized proportionately by transcendentalists as Brahman, Paramātmā and the Supreme Personality of Godhead. Here, in confirmation of the same statement, Lord Kṛṣṇa, who awards the impersonalist the pleasure of Brahman realization by His bodily effulgence, also gives pleasure to the devotees as the Supreme Personality of Godhead. Those who are under the spell of the external energy, māyā, take Him only as a beautiful child. Yet He gave full transcendental pleasure to the cowherd boys who played with Him. Only after accumulating heaps of pious activities were those boys promoted to personally associate with the Supreme Personality of Godhead. Who can estimate the transcendental fortune of the residents of Vṛndāvana? They were personally seeing the Supreme Personality of Godhead face to face, He whom many yogīs cannot find even after undergoing severe austerities, although He is sitting within their hearts. This is confirmed in the Brahma-saṁhitā: One may search for Kṛṣṇa, the Supreme Personality of Godhead, through the pages of the Vedas and Upaniṣads, but it is difficult to find Him there.
(Krsna Book).

Therefore Kṛṣṇa is both the material and the efficient cause of everything. He is always intermingled with everything as cause and effect. Not only the gopīs but all living entities are always inseparably connected with Kṛṣṇa in all circumstances. The gopīs, however, are perfectly and thoroughly in cognition of this relationship with Kṛṣṇa, whereas the living entities under thespell of māyā, the illusory energy, are forgetful of Kṛṣṇa and think themselves separate identities having no connection with Him.
Love of Kṛṣṇa, or Kṛṣṇa consciousness, is therefore the perfection of real knowledge in understanding things as they are. Our minds can never be vacant. The mind is constantly occupied with some kind of thought, and the subject matter of such thought cannot be outside the eight elements of Kṛṣṇa's energy. One who knows this philosophical aspect of all thoughts is actually a wise man, and he surrenders unto Kṛṣṇa. The gopīs are the epitome of this perfectional stage of knowledge.
(Krsna Book).

At the present moment almost everyone is engaged in some kind of fruitive activity. Those who are desirous of gaining material profits by working are called karmīs, or fruitive workers. All living entities within this material world have come under the spell of māyā. This is described in the Viṣṇu Purāṇa (6.7.61):
viṣṇu-śaktiḥ parā proktā
kṣetrajñākhyā tathā parā
avidyā-karma-saṁjñānyā
tṛtīyā śaktir iṣyate
(CC.2:6:154)
Sages have divided the energies of the Supreme Personality of Godhead into three categories—namely, the spiritual energy, marginal energy and material energy. The material energy is considered to be the third-class energy (tṛtīyā śaktiḥ). Those living beings within the jurisdiction of the material energy sometimes engage themselves like dogs and hogs in working very hard simply for sense gratification.
(Nectar of Instruction).

This is due to vikarma. Vikarma means "actions which should not be done." Therefore, we must practice sādhana-bhakti—which means to offer maṅgala-ārati (Deity worship) in the morning, to refrain from certain material activities, to offer obeisances to the spiritual master and to follow many other rules and regulations which will be discussed here one after another. These practices will help one become cured of madness. As a man's mental disease is cured by the directions of a psychiatrist, so this sādhana-bhakti cures the conditioned soul of his madness under the spell of māyā, material illusion.
(Nectar of Instruction).

Without being elevated to the position of a jñānī, or wise man, one cannot stick to the principle of worshiping the Supreme Personality of Godhead. The less intelligent or those whose intelligence has been taken away by the spell of māyā are attached to different demigods on account of the influence of the modes of nature. The wise man is he who has thoroughly understood that he is spirit soul and not simply a body. Because he realizes that he is spirit and Kṛṣṇa is the supreme spirit, he knows that his intimate relationship should be with Kṛṣṇa, not with this body. The distressed and the man in want of money are in the material concept of life, because distress and need of money are both in relationship with this body. One who is inquisitive may be a little above the distressed and the man in need of money, but still he is on the material platform. But a wise man who seeks Kṛṣṇa knows perfectly well that he is spirit soul, or Brahman, and that Kṛṣṇa is the supreme spirit soul, or Parabrahman.
(Nectar of Instruction).

Śrī Caitanya Mahāprabhu therefore advised the beggars to chant "Haribol!" while taking prasādam. Chanting means accepting one's self as the eternal servant of Kṛṣṇa. This is the only solution, regardless of social position. Everyone is suffering under the spell of māyā; therefore the best course is to learn how to get out of the clutches of māyā. How to do so is stated by Kṛṣṇa in the Bhagavad-gītā (14.26):
māṁ ca yo ’vyabhicāreṇa bhakti-yogena sevate
sa guṇān samatītyaitān brahma-bhūyāya kalpate
"One who engages in full devotional service, unfailing in all circumstances, at once transcends the modes of material nature and thus comes to the level of Brahman."
One can overcome the spell of māyā and attain the transcendental platform by agreeing to engage in the devotional service of the Lord.

(Sri Caitanya Caritamrta----2:14:45----purport).

Because of this love, he is always awake to transcendental realization. Because he knows that Kṛṣṇa consciousness is the basis of knowledge and action, he sees everything as being connected with Kṛṣṇa. Such a person is able to chant the holy name of Kṛṣṇa perfectly. Such a mahā-bhāgavata Vaiṣṇava has the transcendental eyes to see who is sleeping under the spell of māyā, and he engages himself in awakening sleeping conditioned beings by spreading the knowledge of Kṛṣṇa consciousness. He opens eyes that are closed by forgetfulness of Kṛṣṇa. Thus the living entity is liberated from the dullness of material energy and is engaged fully in the service of the Lord. The madhyama-adhikārī Vaiṣṇava can awaken others to Kṛṣṇa consciousness and engage them in duties whereby they can advance.
(Sri Caitanya Caritamrta----2:16:74----purport).

A devotee who receives this power from the Lord must be considered very fortunate. The Kṛṣṇa consciousness movement is spreading to enlighten people about their real position, their original relationship with Kṛṣṇa. One requires Kṛṣṇa's special power in order to be able to do this. People forget their relationship with Kṛṣṇa and work under the spell of māyā life after life, transmigrating from one body to another. This is the process of material existence. The Supreme Lord Śrī Kṛṣṇa personally descends to teach people that their position in the material world is a mistaken one. The Lord again comes as Śrī Caitanya Mahāprabhu to induce people to take to Kṛṣṇa consciousness. The Lord also empowers a special devotee to teach people their constitutional position.
(Sri Caitanya Caritamrta----2:19:114----purport).

There are innumerable conditioned souls rotting in the material world, imprisoned by māyā under the spell of sense gratification. The living entity is so entranced by the spell of māyā that in conditioned life even a pig feels satisfied. There are two kinds of covering powers exhibited by māyā. One is called prakṣepātmikā, and the other is called āvaraṇātmikā. When one is determined to get out of material bondage, the prakṣepātmikā-śakti, the spell of diversion, impels one to remain in conditioned life fully satisfied by sense gratification. Due to the other power (āvaraṇātmikā), a conditioned soul feels satisfied even if he is rotting in the body of a pig or a worm in stool. To release a conditioned soul from material bondage is very difficult because the spell of māyā is so strong. Even when the Supreme Personality of Godhead Himself descends to deliver conditioned souls, asking them to surrender unto Him, the conditioned souls do not agree to the Lord's proposal. Therefore Śrī Sanātana Gosvāmī said, "Somehow or other, if one helps another gain release from the bondage of māyā, he is certainly recognized immediately by the Supreme Personality of Godhead."
(Sri Caitanya Caritamrta----2:20:6----purport).