Anyone who has not reached to the point of surrendering to Kṛṣṇa, it is to be understood that his intelligence is in, still incomplete. In the Bhagavad-gītā it is said, bahūnāṁ janmanām ante jñānavān māṁ prapadyate (BG 7.19). Actually one who is wise—actually, not falsely—then after many, many births of struggling in karma, jñāna, yoga, he surrenders to Kṛṣṇa. When he actually becomes wise. Jñānavān.
There is a Bengali verse, kṛṣṇa ye bhaje se baḍa catura? Yes. Unless one is very wise and intelligent, he cannot become a devotee of Kṛṣṇa. The first-class intelligent class of men surrenders to Kṛṣṇa. Just like Arjuna.