There must be something the matter with him
because he would not be acting as he does
unless there was
therefore he is acting as he is
because there is something the matter with him

He does not think there is anything the matter with him
because
one of the things that is
the matter with him
is that he does not think there is anything
the matter with him
therefore
we have to help him realize that,
the fact that he does not think there is anything
the matter with him
is one of the things that is
the matter with him


R. D. Laing (“Knots”)