An oft told joke within the Jewish community opens with four Russian Jews on a train.  It seems that each one has converted to Christianity.  The first says that he changed his religion to escape persecution.  The second explains how he desperately wanted to attend the university, and since Jews were not admitted he became a Christian.  The third tells how he fell madly in love with a beautiful gentile who would not have him unless he converted.  The fourth says, “I became a Christian because I saw the light and was convinced that it was true,” to which the other three disdainfully  respond, “Tell that to your gentile friends.”