Insomnia, defined as the inability to sleep soundly, is a sleep disorder characterized by challenges in initiating or maintaining sleep, often associated with daytime exhaustion and emotional disturbances. Literature delves into its complex effects: Eleanor Hallowell Abbott powerfully depicts its physical anguish, while James J.
Walsh highlights its mental burden and societal anxieties. Joseph Conrad contrasts its value for soldiers with its suffering for civilians, and E. F. Benson critiques ineffective remedies. These viewpoints illustrate insomnia not only as a medical issue but also as a means of exploring human fragility, endurance, and the relationship between mind and body.