The Supreme is the Personality of Godhead for the devotees, and liberation for the impersonalist. A person, therefore, acting for Kṛṣṇa, or in Kṛṣṇa consciousness, under proper guidance and without attachment to the result of the work, is certainly making progress toward the supreme goal of life. Arjuna is told that he should fight in the Battle of Kurukṣetra for the interest of Kṛṣṇa because Kṛṣṇa wanted him to fight. To be a good man or a nonviolent man is a personal attachment, but to act on behalf of the Supreme is to act without attachment for the result. That is perfect action of the highest degree, recommended by the Supreme Personality of Godhead, Śrī Kṛṣṇa.
(Bhagavad-Gita-------3:19------purport).

The pure devotees both here and in the transcendental abode associate with Him in person and are able to render personal service to the Lord and thus derive transcendental bliss in His loving service. As for those who are impersonalists and who want to commit spiritual suicide by annihilating the individual existence of the living entity, Kṛṣṇa helps also by absorbing them into His effulgence. Such impersonalists do not agree to accept the eternal, blissful Personality of Godhead; consequently they cannot relish the bliss of transcendental personal service to the Lord, having extinguished their individuality. Some of them, who are not firmly situated even in the impersonal existence, return to this material field to exhibit their dormant desires for activities. They are not admitted into the spiritual planets, but they are again given a chance to act on the material planets. For those who are fruitive workers, the Lord awards the desired results of their prescribed duties, as the yajñeśvara; and those who are yogīs seeking mystic powers are awarded such powers. In other words, everyone is dependent for success upon His mercy alone, and all kinds of spiritual processes are but different degrees of success on the same path.
(Bhagavad-Gita-------4:11------purport).

The impersonalist philosophers, who wish to maintain that the Absolute Truth is without senses, cannot comprehend this verse of Bhagavad-gītā. To them, it is either a metaphor or proof of the mundane character of Kṛṣṇa, the speaker of the Bhagavad-gītā. But, in actuality, Kṛṣṇa, the Supreme Godhead, has senses, and it is stated that His senses are interchangeable; in other words, one sense can perform the function of any other. This is what it means to say that Kṛṣṇa is absolute. Lacking senses, He could hardly be considered full in all opulences. In the Seventh Chapter, Kṛṣṇa has explained that He impregnates the living entities into material nature. This is done by His looking upon material nature. And so in this instance, Kṛṣṇa's hearing the devotee's words of love in offering foodstuffs is wholly identical with His eating and actually tasting. This point should be emphasized: because of His absolute position, His hearing is wholly identical with His eating and tasting. Only the devotee, who accepts Kṛṣṇa as He describes Himself, without interpretation, can understand that the Supreme Absolute Truth can eat food and enjoy it.
(Bhagavad-Gita-------9:26------purport).

The impersonalists are supposed to be situated in the mode of goodness, and they worship five kinds of demigods. They worship the impersonal Viṣṇu form in the material world, which is known as philosophized Viṣṇu. Viṣṇu is the expansion of the Supreme Personality of Godhead, but the impersonalists, because they do not ultimately believe in the Supreme Personality of Godhead, imagine that the Viṣṇu form is just another aspect of the impersonal Brahman; similarly, they imagine that Lord Brahmā is the impersonal form in the material mode of passion. Thus they sometimes describe five kinds of gods that are worshipable, but because they think that the actual truth is impersonal Brahman, they dispose of all worshipable objects at the ultimate end. In conclusion, the different qualities of the material modes of nature can be purified through association with persons who are of transcendental nature.
(Bhagavad-Gita-------17:4------purport).

Persons generally conducted by the modes of passion and ignorance cannot be bona fide candidates for being situated in the transcendental stage of God realization. Only persons conducted by the mode of goodness can have the knowledge of the Supreme Truth. Effects of the modes of passion and ignorance are manifested by too much hankering after wealth and women. And those who are too much after wealth and women can rectify their leanings only by constant remembrance of Viṣṇu in His potential impersonal feature. Generally the impersonalists or monists are influenced by the modes of passion and ignorance. Such impersonalists think of themselves as liberated souls, but they have no knowledge of the transcendental personal feature of the Absolute Truth. Actually they are impure in heart on account of being devoid of knowledge of the personal feature of the Absolute. In the Bhagavad-gītā, it is said that after many hundreds of births, the impersonal philosopher surrenders unto the Personality of Godhead. To acquire such a qualification of God realization in the personal feature, the neophyte impersonalist is given a chance to realize the relation of the Lord in everything by the philosophy of pantheism.
(Srimad Bhagavatam-------2:1:20------purport).

Śrīmad-Bhāgavatam is the science of the Personality of Godhead. The impersonalist always tries to misrepresent the personal feature of the Lord, not knowing the science of this great knowledge, and Śrīmad-Bhāgavatam is in pursuance of the Vedas and scientific knowledge of the Personality of Godhead. To learn this science one should take shelter of the representative of Śrī Śukadeva and follow in the footsteps of Mahārāja Parīkṣit without foolishly attempting to interpret, thereby committing a great offense at the feet of the Lord. The dangerous ways of interpretations by the nondevotee class of men have played havoc in understanding the Śrīmad-Bhāgavatam, and the careful student should be always alert in this matter if he at all wants to learn the science of Godhead.
(Srimad Bhagavatam-------2:8:28------purport).

The impersonalists are very much afraid of hearing the activities of the Lord because they think that the happiness derived from the transcendental situation of Brahman is the ultimate goal of life; they think that anyone's activity, even that of the Personality of Godhead, is mundane. But the idea of happiness indicated in this verse is different because it relates to the activities of the Supreme Personality, who has transcendental qualities. The word guṇa-vādam is significant because the qualities of the Lord and His activities and pastimes are the subject matter for the discussions of devotees. A ṛṣi like Maitreya is certainly not interested in discussing anything pertaining to mundane qualities, yet he says that the highest perfectional stage of transcendental realization is to discuss the Lord's activities. Śrīla Jīva Gosvāmī, therefore, concludes that topics regarding the transcendental activities of the Lord are far beyond the transcendental realization of kaivalya happiness.
(Srimad Bhagavatam-------3:6:37------purport).

Impersonalists do not take to devotional service, but take to other practices, such as the analytical study of the material elements, the discrimination between matter and spirit, and the mystic yoga system. These are beneficial only insofar as they are complementary to devotional service. Caitanya Mahāprabhu therefore told Sanātana Gosvāmī that without a touch of devotional service, jñāna, yoga and Sāṅkhya philosophy cannot give one the desired results. The impersonalists wish to merge into the Supreme Brahman; however, merging into the Supreme Brahman also requires a touch of devotional service. The Absolute Truth is realized in three phases—impersonal Brahman, Paramātmā and the Supreme Personality of Godhead. All these require a touch of devotional service. Sometimes it is actually seen that these Māyāvādīs also chant the Hare Kṛṣṇa mahā-mantra, although their motive is to merge into the Brahman effulgence of the Absolute. The yogīs also at times take to chanting the Hare Kṛṣṇa mahā-mantra, but their purpose is different from that of the bhaktas. In all processes—karma, jñāna or yoga—bhakti is required.
(Srimad Bhagavatam-------4:31:12------purport).

Transcendentalists are divided into two primary groups: the nirviśeṣa-vādīs, or impersonalists, and the bhaktas, or devotees. The impersonalists do not accept spiritual varieties of life. They want to merge into the existence of the Supreme Lord in His Brahman feature (the brahma-jyotir). The devotees, however, desire to take part in the transcendental activities of the Supreme Lord. In the upper planetary system, the topmost planet is Dhruvaloka, and beneath Dhruvaloka are the seven planets occupied by the great sages, beginning with Marīci, Vasiṣṭha and Atri. All these sages regard devotional service as the highest perfection of life. Therefore they all carry the holy water of the Ganges on their heads. This verse proves that for one who has achieved the platform of pure devotional service, nothing else is important, even so-called liberation (kaivalya). Śrīla Śrīdhara Svāmī states that only by achieving pure devotional service of the Lord can one give up all other engagements as insignificant.
(Srimad Bhagavatam-------5:17:3------purport).

Impersonalists and atheists always try to circumvent the form of Kṛṣṇa. Great politicians and philosophers of the modern age even try to banish Kṛṣṇa from Bhagavad-gītā. Consequently, for them there is no salvation. But Kṛṣṇa's enemies think, "Here is Kṛṣṇa, my enemy. I have to kill Him." They think of Kṛṣṇa in His actual form, and thus they attain salvation. Devotees, therefore, who constantly think of Kṛṣṇa's form, are certainly liberated. The only business of the Māyāvādī atheists is to make Kṛṣṇa formless, and consequently, because of this severe offense at the lotus feet of Kṛṣṇa, they cannot expect salvation. Śrīla Viśvanātha Cakravartī Ṭhākura says in this connection: tena śiśupālādi-bhinnaḥ pratikūla-bhāvaṁ didhīṣur yena iva narakaṁ yātīti bhāvaḥ. Except for Śiśupāla, those who go against the regulative principles cannot attain salvation and are surely destined for hellish life. The regulative principle is that one must always think of Kṛṣṇa, whether as a friend or enemy.
(Srimad Bhagavatam-------7:1:32------purport).

The living entity, while executing devotional service or transcendental rituals after many, many births, may actually become situated in transcendental pure knowledge that the Supreme Personality of Godhead is the ultimate goal of spiritual realization. In the beginning of spiritual realization, while one is trying to give up one's attachment to materialism, there is some leaning towards impersonalism, but when one is further advanced he can understand that there are activities in the spiritual life and that these activities constitute devotional service. Realizing this, he becomes attached to the Supreme Personality of Godhead and surrenders to Him. At such a time one can understand that Lord Śrī Kṛṣṇa's mercy is everything, that He is the cause of all causes, and that this material manifestation is not independent from Him. He realizes the material world to be a perverted reflection of spiritual variegatedness and realizes that in everything there is a relationship with the Supreme Lord Kṛṣṇa. Thus he thinks of everything in relation to Vāsudeva, or Śrī Kṛṣṇa. Such a universal vision of Vāsudeva precipitates one's full surrender to the Supreme Lord Śrī Kṛṣṇa as the highest goal. Such surrendered great souls are very rare.
(Bhagavad-Gita------7:19-------purport).

One should know, then, that scholarship is not the qualification necessary to understand Kṛṣṇa. Even the demigods and the great sages have tried to understand Kṛṣṇa by their mental speculation, and they have failed to do so. In the Śrīmad-Bhāgavatam also it is clearly said that even the great demigods are not able to understand the Supreme Personality of Godhead. They can speculate to the limits of their imperfect senses and can reach the opposite conclusion of impersonalism, of something not manifested by the three qualities of material nature, or they can imagine something by mental speculation, but it is not possible to understand Kṛṣṇa by such foolish speculation.
(Bhagavad-Gita------10:2-------purport).

A living entity is eternally an individual soul, and if he wants to merge into the spiritual whole, he may accomplish the realization of the eternal and knowledgeable aspects of his original nature, but the blissful portion is not realized. By the grace of some devotee, such a transcendentalist, highly learned in the process of jñāna-yoga, may come to the point of bhakti-yoga, or devotional service. At that time, long practice in impersonalism also becomes a source of trouble, because he cannot give up the idea. Therefore an embodied soul is always in difficulty with the unmanifest, both at the time of practice and at the time of realization. Every living soul is partially independent, and one should know for certain that this unmanifested realization is against the nature of his spiritual blissful self. One should not take up this process. For every individual living entity the process of Kṛṣṇa consciousness, which entails full engagement in devotional service, is the best way.
(Bhagavad-Gita------12:2-------purport).

Even the quality of goodness here in the material world is not free from tinges of passion and ignorance. But in the transcendental world, only pure goodness, without any tinge of passion or ignorance, exists; therefore the form of the Supreme Personality of Godhead and His variegated pastimes and paraphernalia are all pure sattva-guṇa. Such variegatedness in pure goodness is exhibited eternally by the Lord for the satisfaction of the devotee. The devotee does not want to see the Supreme Personality of Absolute Truth in voidness or impersonalism. In one sense, absolute transcendental variegatedness is meant only for the devotees, not for others, because this distinct feature of transcendental variegatedness can be understood only by the mercy of the Supreme Lord and not by mental speculation or the ascending process. It is said that one can understand the Supreme Personality of Godhead when one is even slightly favored by Him; otherwise, without His mercy, a man may speculate for thousands of years and not understand what is actually the Absolute Truth. This mercy can be perceived by the devotee when he is completely freed from contamination. It is stated, therefore, that only when all contamination is rooted out and the devotee is completely detached from material attractions can he receive this mercy of the Lord.
(Srimad Bhagavatam-------3:15:47------purport).

The varieties of the transcendental Lord—His body, His form, His dress, His instruction, His words—are not manufactured by the material energy, but are all confirmed in the Vedic literature. By performance of yoga Kardama Muni actually saw the Supreme Lord as He is. There was no point in seeing an imagined form of God after practicing yoga for ten thousand years. The perfection of yoga, therefore, does not terminate in voidness or impersonalism; on the contrary, the perfection of yoga is attained when one actually sees the Personality of Godhead in His eternal form. The process of Kṛṣṇa consciousness is to deliver the form of Kṛṣṇa directly. The form of Kṛṣṇa is described in the authoritative Vedic literature Brahma-saṁhitā: His abode is made of cintāmaṇi stone, and the Lord plays there as a cowherd boy and is served by many thousands of gopīs. These descriptions are authoritative, and a Kṛṣṇa conscious person takes them directly, acts on them, preaches them and practices devotional service as enjoined in the authoritative scriptures.
(Srimad Bhagavatam-------3:21:11------purport).

When we say that we give up our ego, this means that we give up our false ego, but real ego is always present. When one is reflected through the material contamination of the body and mind in false identification, he is in the conditional state, but when he is reflected in the pure stage he is called liberated. The identification of oneself with one's material possessions in the conditional stage must be purified, and one must identify himself in relationship with the Supreme Lord. In the conditioned state one accepts everything as an object of sense gratification, and in the liberated state one accepts everything for the service of the Supreme Lord. Kṛṣṇa consciousness, devotional service, is the actual liberated stage of a living entity. Otherwise, both accepting and rejecting on the material platform or in voidness or impersonalism are imperfect conditions for the pure soul.
(Srimad Bhagavatam-------3:27:13------purport).

There is no difference between constantly visiting the temple and directly seeing the transcendental form of the Lord; they are of equal value. The advantageous position of the yogī is that he can sit anywhere in a solitary place and meditate upon the form of the Lord. A less advanced person, however, has to go to the temple, and as long as he does not go to the temple he is unable to see the form of the Lord. Either by hearing, seeing or meditating, the objective is the transcendental form of the Lord; there is no question of voidness or impersonalism. The Lord can bestow the blessings of transcendental pleasure upon either the visitor of the temple, the meditator-yogī or one who hears about the Lord's transcendental form from scriptures like the Śrīmad-Bhāgavatam or Bhagavad-gītā. There are nine processes for executing devotional service, of which smaraṇam, or meditation, is one. Yogīs take advantage of the process of smaraṇam, whereas bhakti-yogīs take special advantage of the process of hearing and chanting.
(Srimad Bhagavatam-------3:28:26------purport).

Sometimes it is necessary to preach a philosophical doctrine which is against the Vedic conclusion. In the Śiva Purāṇa it is stated that Lord Śiva said to Pārvatī that in the Kali-yuga, in the body of a brāhmaṇa, he would preach the Māyāvāda philosophy. Thus it is generally found that the worshipers of Lord Śiva are Māyāvādī followers. Lord Śiva himself says, māyāvādam asac-chāstram. Asat-śāstra, as explained here, means the doctrine of Māyāvāda impersonalism, or becoming one with the Supreme. Bhṛgu Muni cursed that persons who worshiped Lord Śiva would become followers of this Māyāvāda asat-śāstra, which attempts to establish that the Supreme Personality of Godhead is impersonal. Besides that, among the worshipers of Lord Śiva there is a section who live a devilish life. Śrīmad-Bhāgavatam and Nārada Pañcarātra are authorized scriptures that are considered sat-śāstra, or scriptures which lead one to the path of God realization. Asat-śāstras are just the opposite.
(Srimad Bhagavatam-------4:2:28------purport).