Where does this definition of humility come from, if not the Catechism of the Catholic Church? I have found a couple claims like this online:


  The Catechism of the Catholic Church describes humility in this way: "The virtue by which a Christian acknowledges that God is the author of all good. Humility avoids inordinate ambition or pride, and provides the foundation for turning to God in prayer (No. 2559)


But, in the Catechism #2559, there is no such definition of humility, although it does mention the word. What, then, am I missing?

Clarification:

I am not asking how to define humility, or even how the Catechism defines humility. I am asking, What is the origin of this quote: "The virtue by which a Christian acknowledges that God is the author of all good"? Everyone seems to attribute it to the Catechism, but I cannot find it there.
It comes from the Glossary, a derived work of the Catechism, which states:


  HUMILITY: The virtue by which a Christian acknowledges that God is the author of all good. Humility avoids inordinate ambition or pride, and provides the foundation for turning to God in prayer (2559). Voluntary humility can be described as "poverty of spirit" (2546).


You can see a copy of the Glossary online here.. Read the top for details about how it was generated and it’s status.