Lewis first read French philosopher Henri Bergson during World War I while recovering from shrapnel wounds, and the experience was profound.
It would be wrong to conclude that his acceptance of some kind of human evolution placed him in the camp of mainstream evolutionary biology, or even mainstream theistic evolution.
Evolution has so many different meanings that if one doesn’t pay close attention, a conversation on the topic will quickly devolve into people talking past one another.
In Lewis’s view, the longings provoked by earthly beauty could not be accounted for by a blind and mechanistic material universe.
In The Abolition of Man, C.S. Lewis expressed his hope that a reformation of science could be brought about by scientists.