Acharya Prashant explains that a wise person, being free from attachment to the mind, does not seek liberation, nor is he a worldly person because he lacks distraction. When it is said that everything other than 'I' is imaginary, it does not refer to the individual ego or the body. Instead, it refers to Brahman, the ultimate truth. The speaker emphasizes that the 'I' who is real is the Truth itself, and this includes the realization that one's own physical form and personal world are also imaginary. To think that 'I am real and the world is fake' is merely a trap of the ego. Brahman is described as that which is beyond the limits of thought and cannot be defined by words; it is the foundation of all existence.