enthusiasm unbridled

“Concentration is one of the happiest things in my life,” he said. “If you cannot concentrate, you are not so happy. I’m not a fast thinker, but once I am interested in something, I am doing it for many years. I don’t get bored. I’m kind of a big kettle. It takes time to get boiled, but then I’m always hot.” — The Fierce Imagination of Haruki Murakami, NY Times Magazine