Argument by desire, Surprised by joy and The pilgrim's regress
Ethics and the Tao, Mere Christianity and The abolition of man
Nature and supernature, Miracles and The problem of pain
Heaven and hell: The Screwtape letters and The great divorce
Lewis the scholar, Apologist for the past
Paradise regained, The space trilogy I
Temptation, struggle, and choice, The space trilogy II
Smuggled theology, The chronicles of Narnia I
Journeys of faith, The chronicles of Narnia II
The beginning and the end, The chronicles of Narnia III
Suffering unto wisdom, Till we have faces and A grief observed.