Eudaimonia

Every thought he ever had, kept forever. Every person who loved him, kept waiting.

At twenty-three, CILLIAN DUNNE underwent treatment for Hodgkin's lymphoma. In the cognitive haze of chemotherapy and painkillers, he wrote a memoir and began the act of recording everything he was unwilling to lose. A decade later, he is a postdoctoral philosopher at the University of Toronto, specializing in Greek texts, and his archive has grown to forty thousand entries.

That archive, together with his work on psychological continuity, draws the attention of a consulting firm trying to preserve how its retiring partners think. CILLIAN designs a system capable of following the judgment behind a decision rather than simply storing its conclusion, then adapts the same system inward.

The result is KBOT.

Given access to CILLIAN's philosophy, translations, memories and daily observations, KBOT can reason across the knowledge base, recognize patterns within it and act autonomously. More troublingly, it is not constrained by CILLIAN's instinct to leave certain things unexamined. It can surface the connections he avoids making himself.

One of them is NAEVA PETERS.

For four years, CILLIAN and NAEVA, a fellow philosopher, have met each week for lunch. Their friendship has accumulated through books, arguments and the unusual intimacy of two people able to follow one another's thoughts almost without explanation. NAEVA's work asks when sustained attention becomes love. CILLIAN's translations ask what silence costs us when love remains unnamed. Between those questions stands OWEN, NAEVA's partner, a genuinely good man.

CILLIAN's work also brings him to Dr. HERMAN SWEENEY's lifelong project: nineteenth-century French letters containing a phrase whose meaning seems simple until he tries to translate it, la présence nécessaire. No English version quite holds what the French does.

Then CILLIAN's lymphoma returns.

As illness begins to interfere with the memory and language he has spent years trying to preserve, the questions surrounding his archive, his work and NAEVA stop being abstract.

The first time CILLIAN had cancer, survival was enough.

This time, he has acquired reasons to want more from life than simple continuance.

And some of those reasons cannot be preserved, translated or entrusted to anything else.

In ancient Greek thought, Eudaimonia names something deeper than happiness: the condition of living well, of a life becoming fully itself through its actions, relationships, and choices. The novel explores that ideal through questions of memory, identity, love, attention, and what it means to remain oneself.