Hi Sven,
The reason I use the word antinomy rather than paradox, is that the two are not the same. Although the concepts are similar and despite the two terms being used interchangeably by many, J. I. Packer makes a distinction betwen the two. In my own words, as I understand this distinction, an antinomy is an apparent (though not actual) contradiction between two equally and completely valid truths, whereas a paradox is a figure of speech or a statement where the words contradict themselves to express a true idea. I hope this makes sense--I'm still working on a concise description of the concept of antinomy to which people will readily relate.
For the purpose of my book, my interest is not so much in exploring the examples of antinomy, but in the study of antinomy itself. However, as you point out, C. S. Lewis more often writes about principles that demonstrate antinomy (e.g. sovreignty and free will, grace and the call to holiness, the truth of one God in three persons, the nature of Christ as fully human AND fully divine, etc.) rather than the fact and purpose of antinomy itself. It seems the best way for me to explore the general idea is to study the particulars and what wise writers have written about them.
If there are any of Lewis's writings that you know of that are more likely than others to deal with some of these specifics it would help me focus my research (it would take me a long time to read everything he's ever written to figure it out for myself
). I appreciate anything you or anyone else can do to steer me in the right direction.
Shaunie