I guessed "even" the fourth time, and took the money.

It seemed to me that "even" was a good guess, and I might as well stay by it, which I did.

I guessed "even" twelve times, and took the twelve dollars.

I was doing as they secretly desired.

Their experience of human nature had convinced them that any human being as innocent as my face proclaimed me to be, would repeat his first guess if it won, and would go on repeating it if it should continue to win.