Published a year after the author’s death aged 37 in 2015, “When Breath Becomes Air” is an autobiography about the life and struggle with terminal lung cancer of Dr. Paul Kalanithi.

In the book, Kalanithi, an American neurosurgeon at Stanford University, talks about his own journey from being a physician providing treatment to his patients to becoming a patient himself facing premature mortality.

The narrative moves from talking about how Kalanithi saved lives to confronting the end of his own, reflecting on what makes life worth living in the face of death.

Despite his diagnosis, Kalanithi continued working as a physician and even became a father, explaining to his readers how he embraced life fully until the very end.

Unfortunately, the book had to be completed by his wife after his passing, and serves as a moving meditation on legacy, purpose, and the human experience.

Among the book’s strengths are its authenticity and depth of emotions, touching on everything from the day-to-day experiences of physicians to Kalanithi’s own love of literature — originally, he had studied English at university. A fitting tribute, then, that his own work would go on to become a New York Times’ bestseller.

Neurosurgery, though, was in his words an “unforgiving call to perfection” which not even his diagnosis could check. “Before my cancer was diagnosed, I knew that someday I would die, but I didn’t know when,” he wrote. “After the diagnosis, I knew that someday I would die, but I didn’t know when.”

The book garnered praise upon publication, winning the Goodreads Choice Award for Memoir and Autobiography in 2016. Its run on the NYT’s bestseller list lasted an impressive 68 weeks.

Writing in the Guardian, Alice O’Keefe suggested: “The power of this book lies in its eloquent insistence that we are all confronting our mortality every day, whether we know it or not. The real question we face, Kalanithi writes, is not how long, but rather how, we will live — and the answer does not appear in any medical textbook.”