Acharya Prashant provides a detailed commentary on the Kena Upanishad, emphasizing that the text begins with a fundamental question: 'By whom?' He explains that the birth of an Upanishad is only possible when there is an intense, sharp, and well-pointed curiosity in a student. This curiosity is not based on faith or belief but on a desperate need to know the source of existence. He highlights that the student must be ready for the teacher to appear, and the Kena Upanishad represents the event that occurs when that readiness is met. The speaker stresses that the Upanishad is not for those who live life on a set track or accept things blindly; it is for the one who asks deep, almost childlike questions about the source of the mind, life, and the senses. Acharya Prashant explains that the mind creates the world of space and time, but the Upanishad asks what created the mind itself. He argues that while the body and mind may be imaginary or material, there must be an original source behind them. He critiques the modern notion of 'acceptance' when it is used as a tool for stagnation or to stop questioning. To truly accept something, one must first know what it is. The Upanishad does not provide final answers but offers pointers to the truth. It suggests that the ultimate reality, or Brahman, is that which cannot be seen by the eyes but is the power by which the eyes see; it cannot be thought by the mind but is that which enables the mind to think. Finally, the speaker discusses the concept of immortality and the 'wise' (Dheera). He explains that death is a constant process of the body, but the wise person reaches the source or the base, which is immortal. He warns against worshipping mental projections or superstitions, noting that the Upanishad repeatedly instructs to know 'That' as Brahman, and not what people commonly worship. Acharya Prashant concludes that the Upanishad is not something to be merely read or memorized; it must be lived. The value lies not in the words themselves but in the transformation and the awakening of the 'child' within the seeker who dares to ask fundamental questions about the source of all things.