Acharya Prashant explains that the human mind is inherently restless and insatiable, constantly seeking fulfillment through thought and effort. He emphasizes Shri Guru Nanak Dev Ji's teaching that truth cannot be attained through thinking, no matter how much one contemplates. Thought is merely a form of noise that cannot lead to the ultimate reality. The mind's only tool is thinking, but this tool is ineffective for reaching the source of peace. True silence is not a mental concept or a state to be practiced; it is the total absence of the mind's egoistic presence. When the mind tries to 'achieve' silence, it only creates more noise and mental burden.