Acharya Prashant clarifies the true meanings of the terms Astik and Nastik, stating that an Astik is one who is interested in and leans toward the truth through investigation, rather than a mere believer in God. He emphasizes that belief has no place in authentic spirituality or Vedanta, which he describes as being as rigorous as science and mathematics. Unlike science, which seeks proof in the external world, spirituality demands proof even in the inner world and does not take a single step without valid sources of knowledge. He argues that religion is not a belief system and that a truly religious person is inquisitive and asks questions, rather than following traditions or stories blindly. Acharya Prashant highlights that the goal of spiritual inquiry, as seen in the Upanishads, is to reach a point of silence where no more answers remain. He concludes that those who simply believe without questioning are actually Nastiks of the worst kind, and he encourages listeners to use their intelligence to investigate rather than becoming blind followers.