Unimaginable

In an August 1956 letter to a "Mrs. Johnson"--follow the logic here and ponder what awaits us:

No, I don't wish I knew Heaven was like the picture in my Great Divorce, because, if we knew that, we should know it was no better. The good things even of this world are far too good ever to be reached by imagination. Even the common orange, you know: no one could have imagined it before he tasted it. How much less Heaven. 

 --Collected Letters of C. S. Lewis, 3:778