Merry wrote:It seems to me, anyway, that Tolkien was CSL's mentor, certainly in matters of faith, maybe in writing.
Well, yes and no, I'd say. I reckon that all the Inklings mentored each other in a way. In Diana Glyer's book The Company They Keep she makes the point that even folk who criticise your work can have a major effect on you - either you take their advice or stick to your guns - and there are several Inklings, such as Warnie Lewis (CSL's brother, who was a bit of a hero to CSL I think) and Owen Barfield, whose influence is often overlooked. The noisy ones were CSL and Charles Williams. Tolkien did influence Lewis on matters of religion and literature, but Lewis also influenced Tolkien. Possibly by making him stick to his guns!