I laughed. "You're too young to be so... pessimistic," I said, using the English word.
"Pessimistic. It means looking only at the dark side of things."
"Pessimistic... pessimistic..." She repeated the English to herself over and over, and then she looked up at me with a fierce glare. "I'm only sixteen," she said, "and I don't know much about the world, but I do know one thing for sure. If I'm pessimistic, then the adults in this world who are not pessimistic are a bunch of idiots."
(translated from Haruki Murakami's The Wind-Up Bird Chronicle)