What is the author's tone in the memoir, What I Talk About When I Talk About Running?

"What I Talk About When I Talk About Running" is a memoir by Haruki Murakami and is written in a straightforward manner and with great sincerity. Murakami is by his own description a very private person. When he was younger, he felt he was socially inept and enjoyed being alone. He married young and had to force himself to be more social. Yet, that need to be isolated has remained with him over the years. It is remarkable that such a private person as Murakami decided to write a book about himself and his very deep personal feelings about life and what he personally needed to be successful in both his avocation of running and in his professional career as a writer and author.