"When we say it's just a game, we often mean it's trivial. But there can be important games, as when we play a musical instrument, we're not necessarily doing something frivolous, but we are playing. And there is something in the nature of all play, that is not serious, but may be at the same time sincere. All the things that we do and busy ourselves with as human beings, can be seen as games, things being done simply for themselves, not for some ulterior motive."