Acharya Prashant explains the distinction between the brain and intelligence, defining the brain as a mechanical machine shaped by evolution that operates on cause and effect, motives, and time. He asserts that while the brain seeks pleasure and success in the future, intelligence is spontaneous, causeless, and exists in the immediate present. The litmus test for intelligence is whether an action is independent of personal gain or psychological impact; for instance, joy is the 'joy of intelligence' only if it is causeless, whereas pleasure is a mechanical reaction of the brain. He emphasizes that intelligence is self-sufficient and expresses itself without seeking achievement, whereas the brain acts out of a sense of insufficiency to attain something. He further describes intelligence through the concept of 'masti' or a state of being carefree and unconcerned with consequences. This state is not about constant smiling but a deep-seated indifference to loss, rooted in the understanding that one's true nature is integral and cannot be divided or taken away. Acharya Prashant clarifies that while the brain is the necessary physical instrument for the manifestation of intelligence in space and time, intelligence itself is non-local and beyond division. He notes that the brain often fears freedom because it perceives it as dangerous, yet true freedom is the absence of the 'becoming' process. Ultimately, he suggests that in the light of intelligence, the brain begins to function harmoniously, like a well-played instrument, moving from a state of tension to its natural state of relaxation and resolution.