I have a new favorite author/theologian in N.T. Wright, author of Surprised by Hope. He knows how to communicate lofty, theological concepts in a way that both makes sense and engages the reader to think. So much of what we think about theology is tainted by our church and political.
The mistake that many are making these days is they are re-INVENTING and re-DEFINING theology. Some people are taking the party's theological line without thinking about it at all. Re-THINKING is absolutely healthy and necessary.
Wright doesn't get too complicated. He looks at one topic: "thy Kingdom come, thy will be done on heaven as on earth." He looks at that phrase in the Lord's Prayer in light of Heaven, the Resurrection, and the Mission of the Church.
By the time you get done reading the book, you actually feel hopeful - like God wants to do great things with your life and that He wants to develop your gifts for eternal kingdom work and application. How cool is that?