The Lord is the reservoir of all cosmic manifestation, animate and inanimate. The advocates of Viśiṣṭādvaita-vāda philosophy explain the Vedānta-sūtra by saying that although the living entity has two kinds of bodies—subtle (consisting of mind, intelligence and false ego) and gross (consisting of the five basic elements)—and although he thus lives in three bodily dimensions (gross, subtle and spiritual), he is nevertheless a spiritual soul. Similarly, the Supreme Personality of Godhead, who emanates the material and spiritual worlds, is the Supreme Spirit. As an individual spirit soul is almost identical to his gross and subtle bodies, so the Supreme Lord is almost identical to the material and spiritual worlds. The material world, full of conditioned souls trying to lord it over matter, is a manifestation of the external energy of the Supreme Lord, and the spiritual world, full of perfect servitors of the Lord, is a manifestation of His internal energy. Since all living entities are minute sparks of the Supreme Personality of Godhead, He is the Supreme Soul in both the material and spiritual worlds. The Vaiṣṇavas following Lord Caitanya stress the doctrine of acintya-bhedābheda-tattva, which states that the Supreme Lord, being the cause and effect of everything, is inconceivably, simultaneously one with His manifestations of energy and different from them.
(Sri Caitanya Caritamrta----1:2:37----purport).

Two different principles are to be considered herein—namely āśraya, the object providing shelter, and āśrita, the dependents requiring shelter. The āśrita exist under the original principle, the āśraya. The first nine categories, described in the first nine cantos of Śrīmad-Bhāgavatam, from creation to liberation—including the puruṣa-avatāras, the incarnations, the marginal energy, or living entities, and the external energy, or material world—are all āśrita. The prayers of Śrīmad-Bhāgavatam, however, aim for the āśraya-tattva, the Supreme Personality of Godhead, Śrī Kṛṣṇa. The great souls expert in describing Śrīmad-Bhāgavatam have very diligently delineated the other nine categories, sometimes by direct narrations and sometimes by indirect narrations such as stories. The real purpose of doing this is to know perfectly the Absolute Transcendence, Śrī Kṛṣṇa, for the entire creation, both material and spiritual, rests on the body of Śrī Kṛṣṇa.
(Sri Caitanya Caritamrta----1:2:91-92----purport).

The internal potency of the Lord, which is called cit-śakti or antaraṅga-śakti, exhibits variegatedness in the transcendental Vaikuṇṭha cosmos. Besides ourselves, there are unlimited numbers of liberated living beings who associate with the Personality of Godhead in His innumerable features. The material cosmos displays the external energy, in which the conditioned living beings are provided all liberty to go back to the Personality of Godhead after leaving the material tabernacle. The Śvetāśvatara Upaniṣad (6.8) informs us:
na tasya kāryaṁ karaṇaṁ ca vidyate
na tat-samaś cābhyadhikaś ca dṛśyate
parāsya śaktir vividhaiva śrūyate
svābhāvikī jñāna-bala-kriyā ca
(Cc. Madhya 13.65, purport)
"The Supreme Lord is one without a second. He has nothing to do personally, nor does He have material senses. No one is equal to Him or greater than Him. He has unlimited, variegated potencies of different names, which exist within Him as autonomous attributes and provide Him full knowledge, power and pastimes."
(Sri Caitanya Caritamrta----1:2:103----purport).

When predominated by the samvit potency, it is perceived as knowledge in transcendence. And when predominated by the hlādinī potency, it is perceived as the most confidential love of Godhead. Viśuddha-sattva, the simultaneous manifestation of these three in one, is the main feature of the kingdom of God.
The Absolute Truth is therefore the substance of reality, eternally manifest in three energies. The manifestation of the internal energy of the Lord is the inconceivably variegated spiritual world, the manifestation of the marginal energy comprises the living entities, and the manifestation of the external energy is the material cosmos. Therefore the Absolute Truth includes these four principles—the Supreme Personality of Godhead Himself, His internal energy, His marginal energy and His external energy. The form of the Lord and the expansions of His form as svayaṁ-rūpa and vaibhava-prakāśa are directly the enjoyers of the internal energy, which is the eternal exhibitor of the spiritual world, the most confidential of the manifestations of energy. The external manifestation, the material energy, provides the covering bodies of the conditioned living entities, from Brahmā down to the insignificant ant. This covering energy is manifested under the three modes of material nature and appreciated in various ways by living entities in both the higher and lower forms of life.
(Sri Caitanya Caritamrta----1:4:62----purport).

Therefore in the material world we have no experience of eternity, bliss and fullness of knowledge. But in the spiritual world, because of the complete absence of the qualitative modes, everything is eternal, blissful and cognizant. Everything can speak, everything can move, everything can hear, and everything can see in fully blessed existence for eternity. The situation being so, naturally space and time, in the forms of past, present and future, have no influence there. In the spiritual sky there is no change because time has no influence. Consequently, the influence of māyā, the total external energy, which induces us to become more and more materialistic and forget our relationship with God, is also absent there.
(Sri Caitanya Caritamrta----1:5:22----purport).

Māyā, the external energy of the Supreme Personality of Godhead, is divided into two parts. Māyā is both the cause of the cosmic manifestation and the agent who supplies its ingredients. As the cause of the cosmic manifestation she is known as māyā, and as the agent supplying the ingredients of the cosmic manifestation she is known as pradhāna. An explicit description of these divisions of the external energy is given in Śrīmad-Bhāgavatam (11.24.1–4). Elsewhere in Śrīmad-Bhāgavatam (10.63.26) the ingredients and cause of the material cosmic manifestation are described as follows:
kālo daivaṁ karma jīvaḥ svabhāvo
dravyaṁ kṣetraṁ prāṇa ātmā vikāraḥ
tat-saṅghāto bīja-roha-pravāhas
tvan-māyaiṣā tan-niṣedhaṁ prapadye
“O my Lord! Time, activity, providence and nature are four parts of the causal aspect (māyā) of the external energy.
(Sri Caitanya Caritamrta----1:5:58----purport).

The external energy, composed of pradhāna or prakṛti as the ingredient-supplying portion and māyā as the causal portion, is known as māyā-śakti. Inert material nature is not the actual cause of the material manifestation, for Kāraṇārṇavaśāyī, Mahā-Viṣṇu, the plenary expansion of Kṛṣṇa, activates all the ingredients. It is in this way that material nature has the power to supply the ingredients. The example given is that iron has no power to heat or burn, but after coming in contact with fire the iron becomes red-hot and can then diffuse heat and burn other things. Material nature is like iron, for it has no independence to act without the touch of Viṣṇu, who is compared to fire. Lord Viṣṇu activates material nature by the power of His glance, and then the ironlike material nature becomes a material-supplying agent just as iron made red-hot becomes a burning agent. Material nature cannot independently become an agent for supplying the material ingredients. This is more clearly explained by Śrī Kapiladeva, an incarnation of Godhead, in Śrīmad-Bhāgavatam (3.28.40):
(Sri Caitanya Caritamrta----1:5:61----purport).

A person in the conditioned stage of material existence is in an atmosphere of helplessness, but the conditioned soul, under the illusion of māyā, or the external energy, thinks that he is completely protected by his country, society, friendship and love, not knowing that at the time of death none of these can save him. The laws of material nature are so strong that none of our material possessions can save us from the cruel hands of death. In the Bhagavad-gītā (13.9) it is stated, janma-mṛtyu-jarā-vyādhi-duḥkha-doṣānudarśanam: one who is actually advancing must always consider the four principles of miserable life, namely, birth, death, old age and disease. One cannot be saved from all these miseries unless he takes shelter of the lotus feet of the Lord. Śrī Caitanya Mahāprabhu is therefore the only shelter for all conditioned souls. An intelligent person, therefore, does not put his faith in any material possessions, but completely takes shelter of the lotus feet of the Lord. Such a person is called akiñcana, or one who does not possess anything in this material world. The Supreme Personality of Godhead is also known as Akiñcana-gocara, for He can be achieved by a person who does not put his faith in material possessions. Therefore, for the fully surrendered soul who has no material possessions on which to depend, Lord Śrī Caitanya Mahāprabhu is the only shelter.
(Sri Caitanya Caritamrta----1:7:1----purport).

Every disciple must consider himself completely unaware of the science of Kṛṣṇa and must always be ready to carry out the orders of the spiritual master to become competent in Kṛṣṇa consciousness. A disciple should always remain a fool before his spiritual master. Therefore sometimes pseudo spiritualists accept a spiritual master who is not even fit to become a disciple because they want to keep him under their control. This is useless for spiritual realization.
One who imperfectly knows Kṛṣṇa consciousness cannot know Vedānta philosophy. A showy display of Vedānta study without Kṛṣṇa consciousness is a feature of the external energy, māyā, and as long as one is attracted by the inebrieties of this ever-changing material energy, he deviates from devotion to the Supreme Personality of Godhead. An actual follower of Vedānta philosophy is a devotee of Lord Viṣṇu, who is the greatest of the great and the maintainer of the entire universe. Unless one surpasses the field of activities in service to the limited, one cannot reach the unlimited.
(Sri Caitanya Caritamrta----1:7:72----purport).

In his Anubhāṣya, Śrī Bhaktisiddhānta Sarasvatī Gosvāmī says that the actual effect that will be visible as soon as one achieves transcendental knowledge is that he will immediately become free from the clutches of māyā and fully engage in the service of the Lord. Unless one serves the Supreme Personality of Godhead Mukunda, one cannot become free from fruitive activities under the external energy. However, when one chants the holy name of the Lord offenselessly, one can realize a transcendental position that is completely aloof from the material conception of life. Rendering service to the Lord, a devotee relates to the Supreme Personality of Godhead in one of five relationships—namely, śānta, dāsya, sakhya, vātsalya or mādhurya—and thus he relishes transcendental bliss in that relationship. Such a relationship certainly transcends the body and mind. When one realizes that the holy name of the Lord is identical with the Supreme Person, he becomes completely eligible to chant the holy name of the Lord. Such an ecstatic chanter and dancer must be considered to have a direct relationship with the Lord.
(Sri Caitanya Caritamrta----1:7:73----purport).

The jīva, or living entity, is a spiritual spark who is part of the Supreme Personality of Godhead. Unfortunately, he thinks the body to be the self, and that misunderstanding is called vivarta, or acceptance of untruth to be truth. The body is not the self, but animals and foolish people think that it is. Vivarta (illusion) does not, however, denote a change in the identity of the spirit soul; it is the misconception that the body is the self that is an illusion. Similarly, the Supreme Personality of Godhead does not change when His external energy, consisting of the eight gross and subtle material elements listed in the Bhagavad-gītā (bhūmir āpo ’nalo vāyuḥ, etc. (B.G.7:4), acts and reacts in different phases.
(Sri Caitanya Caritamrta----1:7:123----purport).