Acharya Prashant explains that all words are constructs, a form of mental activity. There is no word whose definition does not depend on other words; one can never have a single, isolated word. This is the fundamental problem with concepts and thoughts: they cannot stand on their own and lack any independent existence. At the center of all these words, concepts, and thoughts is the 'I'-sense. This is not the pure 'I'-sense, but one that has been gathered through sensory experience and physical processes. The constitution of this usual 'I'-sense is the body; without the body, there is no 'I', and without the 'I', there is no concept. All thoughts, words, and concepts are subservient to the composition of this 'I', which is a false, gathered 'I' derived from the body, time, and random experiences. All mental activity is helplessly dependent on the constitution of this false 'I'. This creates the illusion of 'freedom of thought', which the speaker likens to a tethered cow. The cow can roam endlessly in circles, giving a false impression of freedom, but it has not reached anywhere new. Similarly, thought, despite its endless movement, is bound to the false 'I'. We get the false impression that the thinker within is free because no one can stop the endless thought process, but this is a delusion. Thought is a servant to the ego. It is an extraordinary servant in furthering the ego's superficial interests and fulfilling its desires. However, thought is designed to protect its own center, the false 'I', and therefore cannot expose its falseness or uproot the false ego. Thinking more and more will not lead to Truth because thought itself comes from the false. The speaker clarifies that he is not saying one should not think, but rather examining the entire process of thought. He presents three levels: imagination (unthinking belief), which is the lowest; mentation (thought); and meditation (observation), which is the highest and represents the transcendence of thought. Self-realization is achieved through self-observation, not by thinking about the self. Observation is to know something as it is happening in the moment, without the interference of thought. It is instantaneous, whereas thinking requires time and becomes mere recollection. The Truth is not something to be attained in the distance; it is here and now. Approaching Truth through an intermediary like thought is an act of lovelessness. The door to Truth is always open; in fact, there was never a door at all. We miss it because we are preoccupied with thought.