Acharya Prashant addresses a question about the necessity of using surnames, which often indicate caste. He explains that we tend to accept many small things in life without questioning them. He analyzes the structure of a name, stating that a person's name usually consists of at least two words: a first name and a surname. The first name, he explains, points to the body and is often gender-specific, while the surname points to society, the past, and lineage. This system, he argues, defines a person as a product of their body and society, which is a form of bondage. The name is not chosen by the individual but is given by others, making it the first stamp of slavery. It constantly reinforces one's identification with the body and the past. Acharya Prashant further elaborates that the concept of having two names—one for the body and one for society—is a reflection of being a slave to both. He who wants freedom from the past cannot carry the name of the past. He then connects this to the caste system, explaining that it is a hierarchy where everyone has someone below them to feel superior to. He strongly refutes the idea that this system is part of Sanatana Dharma, calling it a madness of Indian society. He asserts that Sanatana Dharma, through texts like the Upanishads and Advaita Vedanta, is staunchly against caste discrimination. To illustrate his point, Acharya Prashant recounts the story of Satyakama Jabala from the Upanishads. When Satyakama sought education, his guru asked for his lineage. His mother, Jabala, a courtesan, had told him to state that he is Satyakama, son of Jabala, as she did not know his father's identity. The guru, upon hearing this truth, accepted him as a disciple, declaring that such truthfulness is the mark of a true Brahmin. This story highlights that true identity is not based on birth or lineage. The speaker emphasizes that those who believe in caste are the biggest slaves to the body, as caste is a bodily identity. This belief system is a great lie that leads to further falsehoods, hindering both material and spiritual progress.