New answers tagged epistemology
C S Lewis, apparently in Mere Christianity, does mention the concept of not knowing the concept of dark or light: My argument against God was that the universe seemed so cruel and unjust. But how had I got this idea of just and unjust? A man does not call a line crooked unless he has some idea of a straight line. What was I comparing this universe with ...
The concept is present in C.S. Lewis's "The Silver Chair" (towards the end, when the witch is seeking to convince the Children, Puddleglum and Prince Rilian that Narnia & Aslan are just fantasies - and it's actually not even all of life - just a long time), I wouldn't be surprised if he also had something to that effect in "Mere Christianity".
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