I just finished my first read of Light of the World- My impression for a possible thesis is as follows:
The role of the Catholic Church in today's darkening society, is to shine the Light of Christ Love in the form of Object Truths rather than relative falsehoods into the darkest crevices of the world; even when that world is Herself.
This was discussed in Pope Benedict's frank discussion of the Williamson affair, the sex abuse scandals, the great works done in ecumenical talks, the Church's role in the environment, and how the Church is discriminated against and cannot be embrace relativism when it comes to sexual morals.
So these are my first thoughts. What about anyone else?