(Click to enlarge photo of Lord Balarāma, Vṛndāvana-dhāma)
"Lord Balārama is the Personality of Godhead, Ananta Himself; therefore He is beyond the scope of understanding by mind, intelligence or body. He descended exactly like a human being and behaved in that way for His own purpose; we can only explain His activities as the Lord's pastimes. No one can even estimate the extent of the unlimited demonstrations of His pastimes because He is all-powerful."
(Kṛṣṇa Book, Chapter 77)
"The Supreme Personality of Godhead, Kṛṣṇa, is the fountain- head of all incarnations. Lord Balarāma is His second body. They are both one and the same identity. They differ only in form. He is the first bodily expansion of Kṛṣṇa, and He assists in Lord Kṛṣṇa's transcendental pastimes."
(Caitanya-caritāmṛta Adi 5.4-5, Purport)
"Śrī Balarāma is the servitor Godhead who serves Lord Kṛṣṇa in all affairs of existence and knowledge. Lord Nityānanda Prabhu, who is the same servitor Godhead, Balarāma, performs the same service to Lord Gaurāńga by constant association."
(Caitanya-caritāmṛta Adi 5.10, Purport)
"In the Upaniṣads it is stated, nāyam ātmā bala-hīnena labhyaḥ. The purport is that one cannot attain the supreme platform of self-realization without being sufficiently favored by Balarāma. Bala does not mean physical strength. No one can attain spiritual perfection by physical strength. One must have the spiritual strength which is infused by Balarāma, or Saṅkarṣaṇa. Ananta, or Śeṣa, is the source of the power which sustains all the planets in their different positions. Materially this sustaining power is known as the law of gravitation, but actually it is a display of the potency of Saṅkarṣaṇa. Balarāma, or Saṅkarṣaṇa, is the source of spiritual power, or the original spiritual master. Therefore Lord Nityānanda Prabhu, who is also the incarnation of Balarāma, is the original spiritual master. And the spiritual master is the representative of Balarāma, the form of the Supreme Personality of Godhead who supplies spiritual strength. In the Caitanya-caritāmṛta it is confirmed that the spiritual master is the manifestation of the mercy of Kṛṣṇa."
(Kṛṣṇa Book, Chapter 2)