The Bible is a serious book , if in terms of sales alone . I wonder do other religious texts sell as well as the Bible does ? What would you say .

I know that in 1968 or thereabouts the only book that came close to it was "The Common Sense Book of Baby and Child Care" by Dr Benjamin Spock, which happens to coincide with around the time that it was proclaimed that the Beatles were more famous than Jesus or whatever it was . The Nixon shock was shortly after that right ?