Acharya Prashant explains that Sanatana Dharma and Vedanta are fundamentally concerned with the distinction between the timeless truth and the time-bound mind. He classifies existence into three categories: the timeless (Nitya), the eternal (Shashwat), and the time-bound (Kalbadh). Only the truth is truly Sanatana because it exists beyond the reach of the mind and words. The mind is in a constant state of flux and restlessness, seeking a contentment that cannot be found within the realm of time-bound objects, desires, or attachments. Therefore, the fundamental human tendency to seek liberation from the self is the only constant throughout history.