If God made the world, why has it gone wrong? by C.S. Lewis

If a good God made the
world why has  it gone wrong? And for many years I simply  refused to listen
to the Christian  answers  to  this  question,  because  I  kept on  feeling
"whatever you say,  and however clever your  arguments are,  isn't  it  much
simpler  and  easier to  say that the  world was not made by any intelligent
power? Aren't  all your arguments simply a complicated attempt to  avoid the
obvious?" But then that threw me back into another difficulty.
     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 when I called it unjust? If  the whole show was
bad and senseless from A to Z, so  to  speak, why did I, who was supposed to
be part of the show, find myself in such violent reaction against  it? A man
feels  wet  when he falls into water,  because man is not a  water animal: a
fish would not feel wet.
     Of course I could have  given up my  idea of justice by  saying it  was
nothing but  a  private idea of my own. But  if I did that, then my argument
against  God collapsed too- for  the argument  depended on  saying that  the
world  was really unjust, not simply  that  it  did not happen to  please my
private fancies. Thus in the very act  of trying to  prove  that God did not
exist-in other words, that the whole of reality was senseless-I  found I was
forced to assume that one part of reality-namely my idea of justice-was full
of sense.
     Consequently atheism turns  out to be too simple. If the whole universe
has no meaning,  we should never have found out that it has no meaning: just
as, if there were no light in the universe and therefore no  creatures  with
eyes, we should never know it was dark. Dark would be without meaning.

C.S. Lewis, Mere Christianity        http://www.lib.ru/LEWISCL/mere_engl.txt