On the Upper West Side lived an assimilated Jew who was a militant
atheist. But he sent his son to Trinity School because, despite its
denominational roots, it's a great school, and completely secular.
After a month, the boy comes home and says casually, "By the way Dad,
do you know what _Trinity_ means? It means the Father, the Son, and
the Holy Ghost."
The father can barely control his rage. He seizes his son by the
shoulders and declares, "Danny, I'm going to tell you something now
and I want you never to forget it. There is only one God -- and we
don't believe in Him!"