Lewisian

adjective3

1. •
   Of or relating to C. S. Lewis (1898–1963), writer and theologian, known for the children's fantasy series The Chronicles of Narnia and for non-fictional Christian apologetics.
2. •
   Of or relating to David Lewis (1941–2001), American philosopher.
3. •
   Of or relating to Clarence Irving Lewis (1883–1964), American academic philosopher and the founder of conceptual pragmatism.