Even the great scientists who have discovered many wonderful scientific contributions could not trace out about the personal self, which is the cause of such wonderful discoveries. The Kṛṣṇa consciousness movement basically is trying to reach this science of the soul—not any dogmatic way, but in complete scientific and philosophical understanding.
You can find out the background of this body as the soul and the soul's presence as perceived . . . perceivable by consciousness. Similarly, the presence of Supersoul and superconsciousness in the universal body of cosmic manifestation is perceived by the presence of the Supreme Lord, or the Absolute Truth.
The Absolute Truth is systematically experienced in the Vedānta-sūtra, generally known as the Vedānta philosophy, which is elaborately explained by a commentary by the same author of the Vedānta-sūtras known as the Śrīmad-Bhāgavatam. The Bhagavad-gītā is the preliminary study of the Śrīmad-Bhāgavatam to understand the constitutional position of the Supreme Lord, or the Absolute Truth.