One of the stalwarts in the spiritual line of Gauḍīya Vaiṣṇavas, Śrīla Viśvanātha Cakravartī Ṭhākura, has given his opinion on the four types of pious men who approach the Lord—namely, the distressed, those desiring material gain, the inquisitive, and those who knows things as they are. He says,
The distressed, those in need of material gain, and the inquisitive—these three are neophyte fruitive devotees. Their devotion is mixed with fruitive desires. All of them want to fulfill their desires according to their specific qualities. Finally, when they become purified, they desire to reach the divine abode of the Supreme Lord—the Vaikuṇṭha planets. They are not like the karmīs, or fruitive workers, who want to attain to the heavenly planets. As Kṛṣṇa says in the Bhagavad-gītā (9.25) yānti mad-yājino 'pi mām: "One who worships Me attains My supreme abode." The jñānī, or one who knows things as they are, is the fourth type of pious man, and he is superior to the other three kinds. He attains a higher result because his devotion is mixed with knowledge. Like Sanaka Ṛṣi, he attains the devotional mellow of neutrality. Moreover, because the Lord and His pure devotees shower their causeless mercy upon him, a jñānī devotee can also achieve pure love of Godhead, as in the case of Śukadeva Gosvāmī. When devotion mixed with fruitive desires becomes free from those fruitive desires, it is automatically transformed into devotion mixed with knowledge. The result of practising this devotion mixed with knowledge is mentioned above.