Second paragraph of third chapter:

But Clarke was also a famous visionary linked with developments in space exploration, and he explored the role and potentials of technology. He has been one of our guides to the grand adventure of space exploration, one who could write a story and one with wit, but also one who could bring clarity to the explication of complicated scientific issues.

I skimmed this book when writing up Childhood’s End and then came back to it a couple of days later. It has three parts: 1) an analytical introduction, including short profiles of Lewis and Clarke and a preface by Clarke himself; 2) the actual correspondence between Lewis and Clarke, which consists of fifteen letters over the years between 1936 and 1954, some of them very short; and 3) stories and essays by the two writers, three by Lewis and eight by Clarke. The publication history is rather droll, but Miller isn’t a terribly deep analyst and he makes a number of obvious mistakes in reading Lewis’s handwriting; also the first of the stories included, “Ministering Angels” by Lewis, is just repulsive (a sex worker and a feminist go to Mars). The primary non-fiction material is welcome, but the rest a bit superfluous.