Acharya Prashant explains a verse from the Mundaka Upanishad, which states that the works beheld by sages in the Mantras were manifoldly extended in the Treta Yuga. He clarifies that the common understanding of the four Yugas (Satya, Treta, Dvapara, and Kali) as chronological, historical periods is a misconception. We tend to think of time as an external, objective entity, but Vedanta does not see it this way. In Vedanta, there are only two fundamental entities: the Self (Atma) and the mind. Time is not a third, separate thing; time is the mind itself. Since time is a measure of change and all change happens in the mind, the four Yugas are not periods on a calendar but are actually states of the mind. The speaker elaborates on these states. Satya Yuga is the state where the mind is completely centered in the Self, the Truth. Treta Yuga is when the mind is identified with thoughts. Dvapara Yuga is identification with the body, and Kali Yuga is identification with the world (Sansaar). This represents a progressive movement away from the center. Therefore, one can be living in Satya Yuga right now if their life is Truth-centered, or in Kali Yuga if their life is world-centered. It is not about a specific historical era. Connecting this to the Upanishadic verse, Acharya Prashant explains that the Truth, which originates from the Self (Satya Yuga), finds its expression through the seer's thoughts and words, which is the Treta Yuga. The silent, meditative root in Satya Yuga finds its poetic and manifold expression in Treta. For the seer to communicate the Truth, they must use language and thought, which is a slight step away from the absolute, silent Truth. This expression is Treta. He further dismisses mythological stories as being for immature seekers and criticizes modern interpretations that link Yugas to galactic movements, calling them an insult to both science and spirituality.