Just a holding post of related links:
Recurring theme of mine – very smart, highly rational people converting to christian religion, even catholicism, as they grow older and wiser. Triple-first C S Lewis, Marshall McLuhan, inklings etc.
Recent “Great Lives” on C S Lewis proposed by Suzannah Lipscomb (@sixteenthCgirl). Like Matthew Parris, I was always turned off by Lewis (and Tolkien) obviously allegorical yet sneakily preachy agenda, despite obvious clever qualities.