Acharya Prashant explains that there is the Atma (Self), and there is the expansion of the Atma. The Atma is just a point, the subtlest. As this point expands, the grossness increases. What we call the body and what we call the mind are, in fact, two names for the same expansion. This single expansion has two limits, two boundaries, or two degrees. If the expansion is minimal, we call the body 'mind'. If the expansion is greater, we call it 'body'. And when the expansion becomes excessive, we call it the 'world'. All three—mind, body, and world—can be given a common name: 'Deh' (body). You can either say there are only two entities, mind and Atma, or you can say there are only two, body and Atma. The reduction of the body's grossness means you are living a subtle life. The subtler the body becomes, the closer you get to the Atma. Imagine the Atma as a central point; the farther you are from this point, the grosser the expansion becomes, like ripples in a pond. It is beneficial for you to stay as close to that point as possible. Similarly, being 'nirog' (disease-free) can be understood in the context of the physical body, but the disease of the mind causes far more suffering. The disease of the mind is its very existence. The more the mind exists, the more its existence itself is its disease. Therefore, being disease-free means that the expansion of the mind is contracting, and you have progressively less to do with the world. Your aim, your center, is that one which has no name, about which nothing can be said, which is merely a point. We speak because there is bitterness and sourness within us. The speaker quotes Kabir Saheb: "Speak such words that you lose the ego of the mind, which cools others and also cools you." The speech of a wise person is like this. In contrast, the expression of a worldly person is like an infected person spreading a virus. Most of what we express into the world is like this. We have a virus inside, and we say, "You take it too." Our every activity is to make the world sick. A worldly person, even when they wish you well, does you harm. And a yogi, even if it seems they are doing you harm, they are still doing you good.