Acharya Prashant explains that the human brain is primarily an accumulation of external influences, including time, space, and knowledge gathered from others. While the brain identifies with names, religions, and external data, it has nothing of its own. He compares a person who functions solely through the brain to a machine or a camera, which operates based on external design and input without any internal understanding. However, human beings possess something beyond this mechanical nature: the power of intelligence and understanding, which is not earned or acquired from the outside world. He distinguishes between thoughts and the power to think. While thoughts and knowledge can be obtained from books or external sources, the fundamental capacity to understand and the power of intelligence are innate gifts. Real gratitude is the realization that one's most precious qualities, such as intelligence, the capacity to love, and the ability to perceive, are given free of cost. It is a profound 'thank you' to the innate self or the internal source rather than just a response to external favors. Acharya Prashant further illustrates this by pointing out that while people thank others for food or a book, they often forget to be grateful for the capacity to taste or the power to understand. He emphasizes that without this internal appreciation, there is no difference between a human and a recording device. Even in the context of addiction, he notes that while the addiction comes from the outside, the realization of being addicted is an act of internal intelligence. True gratitude is the expression of gratefulness to the intelligence within.