What is the Gospel of Pay?

From the text:

Atalanta is not the first or the last maiden whom greed of gold has led to defile the temple of Love; and not maids alone, but men in the race of life, sink from the high and generous ideals of youth to the gambler's code of the Bourse; and in all our Nation's striving is not the Gospel of Work befouled by the Gospel of Pay? So common is this that one-half think it normal; so unquestioned, that we almost fear to question if the end of racing is not gold, if the aim of man is not rightly to be rich. And if this is the fault of America, how dire a danger lies before a new land and a new city, lest Atlanta, stooping for mere gold, shall find that gold accursed!