"The way I see it, there's two kinds of crying. People cry because they feel sorry for themselves. And people cry because they're sad. People who feel sorry for themselves are like children who want something done for them. They want their big brother or mother or next-door neighbor to help them." Suzu just looked at him. "It's because, in situations like this, children don't have any way of protecting themselves. That's why I say they cry like children."
Fuyumi Ono, “A Thousand Leagues of Wind”










