'When you painted on earth—at least in your earlier days—it was becuase you caught glimpses of Heaven in the earthly landscape. The success of your painting was that it enabled others to see the glimpses too. But here you are having the thing itself. It is from here that the messages came. There is no good telling us about this country, for we see it already.' .... 
'Light itself was your first love: you loved paint only as a means of telling about light.'"

-C.S. Lewis, The Great Divorce