"Then Ma told them something else about Santa Claus. He was everywhere, and besides that, he was all the time.
Whenever anyone was unselfish, that was Santa Claus.
Christmas Eve was the the time when everybody was unselfish. On that one night, Santa Claus was everywhere, because everybody, all together, stopped being selfish and wanted other people to be happy. And in the morning you saw what that had been done."
On the Banks of Plum Creek, Laura Ingalls WIlder, 1937