The aim of life is tattva-jijñāsā. That Sanātana Gosvāmī did when he approached Śrī Caitanya Mahāprabhu. He inquired from Him, ke āmi keno more jāpe tāpa-traya (CC Madhya 20.102): "My dear Lord, kindly let me know who am I and why I am put into the threefold miserable condition of life." Then one can say, "You are minister. You know what you are." Then he says: "No, actually I do not know what I am." Grāmya-vyavahāre kaha paṇḍita satya kore māni (CC Madhya 20.100): "Some neighborhood men, they call me I am very big man, I am very learned man, and when I study myself," āpanāra hitāhita kichui nā jāni, "I do not know what I am, wherefrom I have come, where I have to go after leaving this body, why I am put into the tribulation of threefold miseries. I do not want to die. Why death is enforced upon me? I do not want to take birth. Why that is also enforced upon me? I do not want old age. Why it is enforced upon me? I do not want any disease. Why it is enforced upon me? And what is the purpose of my coming in this material world, and where I shall go after my death? Or this is the finish?" There are so many things to inquire. That is called tattva-jijñāsā. This is called tattva-jijñāsā. Jīvasya tattva-jijñāsā.
The Bhāgavata recommends that in the human form of life, the only necessity is to inquire about the Absolute Truth. That includes so many other things. The Absolute Truth is experienced by different persons from different angle of vision. That is explained here. Vadanti tat tattva-vidas tattvam. That is Absolute Truth—Brahman or Para-brahman—which is nondual. Vadanti tat tattva-vidas tattvaṁ yaj jñānam advayam. Advayam means without any duality. When we say Brahman, impersonal Brahman, or when we speak Paramātmā, or when we speak of Bhagavān, the Supreme Personality of Godhead, there is no difference between these three terms.