When I feel that I'm going to write a detective story, I buy a five pound box of chocolates and a ream of paper. When the candy is all gone and the paper all used up, I know that the book is long enough.
Carolyn Wells... the subjective viewpoint is the only one to use regarding a library. Your true library is a collection of the books you want.You may have deplorably poor taste or bad judgment. Never mind. Correct those traits before you exchange your books.
Carolyn Wells