In Victor Hugo's "Les Misérables," the importance of self-protection is emphasized, suggesting that individuals must take responsibility for their own safety. Wise people are encouraged to act like their own guardians, illustrating the need for vigilance in a world where danger can be imminent. This notion reflects a broader theme in the novel regarding the struggles of individuals to protect their well-being in the face of societal challenges.

The passage advocates for proactive measures, such as securing one's home. By closing, barring, and barricading houses and ensuring doors are fastened, it suggests that personal security requires effort and awareness. This call to action underscores the necessity of being cautious and prepared, as the world can be unpredictable and perilous, reminding readers of the value of wisdom and foresight in navigating life’s uncertainties.