The quote from Miguel de Cervantes' "Don Quixote" illustrates the consequences of excessive reading and lack of sleep. The character's obsession with tales of chivalry leads him to lose touch with reality. This suggests a cautionary tale about the effects of immersing oneself too deeply in fiction without balancing it with reality.

By expressing that his brain "dried up," the quote conveys the idea that one can become overwhelmed by imagination and fantasy. The protagonist's descent into madness serves as a reminder of the importance of moderation in one's pursuits, particularly in the realms of literature and escapism.