Sure. It doesn't appear in the story. In the end notes, I talk specifically about the Golden Ladder, as well as Maimonides, who many people consider the greatest rabbi of all time. He is also known as Rambam. He lived in 1138 to 1204, in Spain under Muslim rule. He wrote the Mishnah Torah, commentaries about the Torah, the Bible, and did a lot to solidify a lot of what we know today as modern Judaism. And one of the questions that he tried to answer was the question this book asks, How do we create a fair society today? We tend to congratulate ourselves when we give to the poor. Maimonides had a different viewpoint. He believed that we should be thanking those who we give to, for presenting us with an opportunity to be better people, because we know that God could have just as easily given them more and us less. So he created what he called a Golden Ladder of Giving to encourage people in baby steps. The first step of the ladder is to give less than you should, reluctantly. You know, the various steps: You give what you should, but unhappily, or you give less than you should, but happily. And little by little, you climb the ladder. You give anonymously, so that the person who's receiving doesn't feel shame when they pass you in the street, to the higher ladder, which is you create a job for people who need one, so that they can then start earning money and help others. You know, he tended to think that people should give 10% of their income, you could give up to 20% if you had more. He felt as well that it was not incumbent on us to give so much that we might find ourselves then in need. So he created this beautiful framework. You know, for myself, instead of beating myself up for what I'm not doing I can say, Okay, well, hey, I've almost moved up a rung of the ladder. We can't do everything, as Ruth talked about with her book, it's not for us to save the world, but it's for us to do whatever we can to make a little difference.