How one can make progress in bhakti-mārga? If we have got faith in the words of Kṛṣṇa, that Kṛṣṇa says, sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (BG 18.66), if we apply our intelligence, niścayātmikā, then our spiritual life begins. Ādau śraddhā tataḥ sādhu-saṅgaḥ (CC Madhya 23.14-15). These are the different methods to make advance in spiritual life, especially in bhakti-yoga, devotional life.
So ādau śraddhā. Kṛṣṇa says these are on the intellectual platform. Sometimes intellectual platform is taken as sentimental. But if it is rightly taken, somebody believes, even Kṛṣṇa. . . Kṛṣṇa's statement, they are not sentimental. They are vijñāna-sahitam. Jñānaṁ vijñāna-sahitam. Yaj jñātvā mokṣyase aśubhāt, jñānaṁ vijñāna-sahitaṁ pravakṣyāmy anasūyave (BG 9.1). Yaj jñātvā mokṣyase aśubhāt. This is the statement in Bhagavad-gītā. Jñānaṁ te 'haṁ sa-vijñānam vakṣyāmy aśeṣataḥ (BG 7.2). Pravakṣyāmy aśeṣataḥ, yaj jñātvā mokṣyase aśubhāt. That aśubha, inauspicious, we do not understand. We have taken inauspicious thing as auspicious. This is called māyā. We accept something māyā, or illusion, or vivarta. We accept something for something. The example is given: there is a rope, and due to my ignorance or insufficient knowledge, I take it as a snake. This is my insufficient knowledge. The snake is fact and the rope is fact. But when we take the rope as snake, that is ignorance, or the snake as rope, that is ignorance. The Māyāvādī philosopher says that "We are accepting snake. . . er, rope as a snake. But there is no snake." But we, Vaiṣṇava philosopher, we say, "No, there is snake and there is rope. But when we accept the rope as snake, that is māyā." Similarly, there is spiritual world and there is material world. But when we accept the material world as everything, that is māyā. That is illusion.