So, value the sort of play, and as I said, see if you can break the koan—the koan will be amused. And see it, and let it—let it into your heart. And see what comes, or follow it around, or have it follow you. And finally you’ll find, you’ll realize, “Oh, I’m here. I’m free.”
The practice part of it is that it doesn’t matter if you think you lost the coin and start to be unhappy about life. That is another theory. And it doesn’t matter how many times that theory rises. Even that theory is the coin. A koan practice means that you go back to the river over and over again and you can trust that process.
Everyone knows happiness is A Good Thing, more desirable than say, vacuum cleaners or eye shadow. The founding fathers of the United States offered happiness as part of a mission statement for a people coming together in a nation, encouraging you to pursue, and perhaps to go so far as to chase, harry, hunt down, subdue and corral happiness. Even the Dalai Lama has said that happiness is the point of Buddhism.