Chapter 3 undertakes the task of establishing non-duality by reason alone. Atman is like Ether, empty space. Is it multiple? Does it become many in the form of many individuals? Does Atman suffer or becomes happy? Will it die and reincarnate? Gaudapada clears up such questions and many beliefs.
Reading and discussion on the English translation of the Mandukya Karika by Gaudapada, which is a commentary on the Mandukya Upanishad.