Good books are only those books that everyone likes and understands.
Nowadays a lot of people think that good books must be easy and everyone should understand them. At the same time, there are those who likes difficult books, their unusualness and their complexity.
To my mind, readers should not be easy with understanding books they should not only best sellers but also lesser-known books. First of all. public opinion can be wrong. Secondly, it is useful to read something unusual and difficult. It is necesssry for intellectual and cultural development. What is more, I believe that if people read books of the same type and unpretentious, they will numb because of lack of load.
However, there exists another point of view on this issue.