The conditioned souls may try to understand the Supreme Personality of Godhead for many billions of years through their mental speculative processes, traveling at the speed of the mind or the wind

Expressions researched:
"The conditioned souls may try to understand the Supreme Personality of Godhead for many billions of years through their mental speculative processes, traveling at the speed of the mind or the wind"

Srimad-Bhagavatam

SB Canto 6

The conditioned souls may try to understand the Supreme Personality of Godhead for many billions of years through their mental speculative processes, traveling at the speed of the mind or the wind, but still the Absolute Truth will remain inconceivable to them because a materialistic person cannot measure the length and breadth of the Supreme Personality of Godhead's unlimited existence.

SB 6.4.23, Translation and Purport

Prajāpati Dakṣa said: The Supreme Personality of Godhead is transcendental to the illusory energy and the physical categories it produces. He possesses the potency for unfailing knowledge and supreme willpower, and He is the controller of the living entities and the illusory energy. The conditioned souls who have accepted this material manifestation as everything cannot see Him, for He is above the evidence of experimental knowledge. Self-evident and self-sufficient, He is not caused by any superior cause. Let me offer my respectful obeisances unto Him.

The transcendental position of the Supreme Personality of Godhead is explained herewith. He is not perceivable by the conditioned souls, who are accustomed to material vision and cannot understand that the Supreme Personality of Godhead exists in His abode, which is beyond that vision. Even if a materialistic person could count all the atoms in the universe, he would still be unable to understand the Supreme Personality of Godhead. As confirmed in Brahma-saṁhitā (BS 5.38):

panthās tu koṭi-śata-vatsara-saṁpragamyo

vāyor athāpi manaso muni-puṅgavānām

so 'py asti yat-prapada-sīmny avicintya-tattve

govindam ādi-puruṣaṁ tam ahaṁ bhajāmi

The conditioned souls may try to understand the Supreme Personality of Godhead for many billions of years through their mental speculative processes, traveling at the speed of the mind or the wind, but still the Absolute Truth will remain inconceivable to them because a materialistic person cannot measure the length and breadth of the Supreme Personality of Godhead's unlimited existence. If the Absolute Truth is beyond measurement, one may ask, how can one realize Him? The answer is given here by the word svayambhuve: one may understand Him or not, but nevertheless He is existing in His own spiritual potency.