There is no question that Great Circle requires a commitment—at 589 pages. And I read it at a pace slower than any book I can remember reading in my recent past. But while I was reading it, I had five weeks of the delightful company of my L&L co-editor and her two small children. Quiet times for reading were few and far between. Despite the slowness with which I read it, however, I found myself consciously slowing down as I came to the end of the book. I simply didn’t want it to end.