The Farthest Shore by Ursula K. Le Guin

In this third installment of a high-fantasy series, a young prince and an archmage set out on a harrowing journey to discover the cause of a mysterious blight that is draining magic and life from their world. As they travel to the farthest reaches of their archipelago, facing dragons and confronting death itself, they must unravel a complex web of greed and power. The narrative explores profound themes such as the balance between life and death, the true cost of immortality, and the necessity of accepting one's own mortality, culminating in a quest that is as much about inner discovery as it is about saving their realm from the encroaching darkness. The 6233rd greatest book of all time