Acharya Prashant explains that the mind receives stimuli not only from external senses but also from its internal database of memory. He clarifies that in linguistics, meaning is simply the translation of one word into others, but in spiritual terms, meaning implies a stake or self-interest. Every word carries an existential connotation for the ego, signaling whether it is gaining or losing. The ego is so desperate that it cannot allow anything to exist without assigning it a meaning related to its own survival or fulfillment.