This Kṛṣṇa consciousness movement is completely authorized from Vedic principles. In the Bhagavad-gītā Kṛṣṇa says, "The actual aim of Vedic research is to find out Kṛṣṇa." In the Brahma-saṁhitā it is also stated, "Kṛṣṇa, Govinda, has innumerable forms, but they are all one." They are not like our forms, which are fallible. His form is infallible. My form has a beginning, but His form has no beginning. It is ananta. And His form—so many multiforms—has no end. My form is sitting here and not in my apartment. You are sitting there and not in your apartment. But Kṛṣṇa can be everywhere at one time. He can sit down in Goloka Vṛndāvana, and at the same time He is everywhere, all-pervading. He is original, the oldest, but whenever you look at a picture of Kṛṣṇa you'll find a young boy fifteen or twenty years old. You will never find an old man. You have seen pictures of Kṛṣṇa as a charioteer from the Bhagavad-gītā. At that time He was not less than one hundred years old. He had great-grandchildren, but He looked just like a boy. Kṛṣṇa, God, never becomes old. That is His supreme power. And if you want to search out Kṛṣṇa by studying the Vedic literature, then you will be baffled. It may be possible, but it is very difficult. But you can very easily learn about Him from His devotee. His devotee can deliver Him to you: "Here He is, take Him." That is the potency of Kṛṣṇa's devotees.
Originally there was only one Veda, and there was no necessity of reading it. People were so intelligent and had such sharp memories that by once hearing from the lips of the spiritual master they would understand. They would immediately grasp the whole purport. But five thousand years ago Vyāsadeva put the Vedas in writing for the people in this age, Kali-yuga. He knew that eventually the people would be short-lived, their memories would be very poor, and their intelligence would not be very sharp. "Therefore, let me teach this Vedic knowledge in writing." He divided the Vedas into four: Ṛg, Sāma, Atharva and Yajur. Then he gave the charge of these Vedas to his different disciples. He then thought of the less intelligent class of men—strī, śūdra and dvija-bandhu. He considered the woman class and śūdra class (worker class) and dvija-bandhu. Dvija-bandhu refers to those who are born in a high family but who are not properly qualified. A man who is born in the family of a brāhmaṇa but is not qualified as a brāhmaṇa is called dvija-bandhu. For these persons he compiled the Mahābhārata, called the history of India, and the eighteen Purāṇas. These are all part of the Vedic literature: the Purāṇas, the Mahābhārata, the four Vedas and the Upaniṣads. The Upaniṣads are part of the Vedas. Then Vyāsadeva summarized all Vedic knowledge for scholars and philosophers in what is called the Vedānta-sūtra. This is the last word of the Vedas.
Vyāsadeva personally wrote the Vedānta-sūtra under the instructions of Nārada, his Guru Mahārāja (spiritual master), but still he was not satisfied. That is a long story, described in Śrīmad-Bhāgavatam. Vedavyāsa was not very satisfied even after compiling many Purāṇas and Upaniṣads, and even after writing the Vedānta-sūtra. Then his spiritual master, Nārada, instructed him, "You explain the Vedānta-sūtra." Vedānta means "ultimate knowledge," and the ultimate knowledge is Kṛṣṇa. Kṛṣṇa says that throughout all the Vedas one has to understand Him: vedaiś ca sarvair aham eva vedyaḥ. Kṛṣṇa also says, vedānta-kṛd veda-vid eva cāham: "I am the compiler of the Vedānta-sūtra, and I am the knower of the Vedas." Therefore the ultimate objective is Kṛṣṇa. That is explained in all the Vaiṣṇava commentaries on Vedānta philosophy. We Gauḍīya Vaiṣṇavas have our commentary on Vedānta philosophy, called Govinda-bhāṣya, by Baladeva Vidyābhūṣaṇa. Similarly, Rāmānujācārya has a commentary, and Madhvācārya has one. The version of Śaṅkarācārya is not the only commentary. There are many Vedānta commentaries, but because the Vaiṣṇavas did not present the first Vedānta commentary, people are under the wrong impression that Śaṅkarācārya's is the only Vedānta commentary. Besides that, Vyāsadeva himself wrote the perfect Vedānta commentary, Śrīmad-Bhāgavatam. Śrīmad-Bhāgavatam begins with the first words of the Vedānta-sūtra: janmādy asya yataḥ (SB 1.1.1). And that janmādy asya yataḥ is fully explained in Śrīmad-Bhāgavatam. The Vedānta-sūtra simply hints at what is Brahman, the Absolute Truth: "The Absolute Truth is that from whom everything emanates." This is a summary, but it is explained in detail in Śrīmad-Bhāgavatam. If everything is emanating from the Absolute Truth, then what is the nature of the Absolute Truth? That is explained in Śrīmad-Bhāgavatam. The Absolute Truth must be consciousness. He is self-effulgent (sva-rāṭ). We develop our consciousness and knowledge by receiving knowledge from others, but for Him it is said that He is self-effulgent. The whole summary of Vedic knowledge is the Vedānta-sūtra, and the Vedānta-sūtra is explained by the writer himself in Śrīmad-Bhāgavatam. We finally request those who are actually after Vedic knowledge to try to understand the explanation of all Vedic knowledge from Śrīmad-Bhāgavatam and the Bhagavad-gītā.