Acharya Prashant clarifies that in the context of Patanjali's Yoga Sutras, the term 'substance' or 'object' refers to the subjects of the mind, intellect, and senses, rather than the Soul. He explains the three types of evidence recognized by the human psyche: direct perception (sensory experience), inference (logical deduction based on observation), and testimony (reliance on credible sources). He argues that the human ego is naturally atheistic because it demands proof for everything, yet Truth is beyond all such measures. True theism, he suggests, is not natural but must be earned by going against one's innate tendencies. He highlights the irony that both atheists and many self-proclaimed theists rely on external evidence to validate the existence of the Soul or God. While the atheist denies God due to a lack of proof, the theist often invents pseudo-scientific proofs to justify their belief. Acharya Prashant asserts that the only true evidence of the Truth is one's own existence and inherent restlessness. He explains that our constant state of dissatisfaction and search for peace is the ultimate proof that a state of absolute peace (Truth) must exist. However, the ego refuses to accept this internal evidence because it would require admitting its own failure and incompleteness. Finally, he advises a balanced approach to life: use science and logic to verify worldly objects and use discernment (Vivek) to judge worldly relationships. He emphasizes that while one should never accept worldly things without proof, one should not demand proof for the ultimate reality. The very existence of doubt in the human mind serves as a testimony to that which is beyond doubt. He concludes that no amount of worldly knowledge can eliminate fundamental human insecurity; only that which lies beyond the world can provide true liberation from doubt.