Aristotle says that the aim of education is to make the pupil like and dislike what he ought.

It is a good rule after reading a new book, never to allow yourself another new one till you have read an old one in between.

Clearly one must read every good book at least once every ten years.

I can't imagine a man really enjoying a book and reading it only once.

No book is really worth reading at the age of ten which is not equally – and often far more – worth reading at the age of fifty and beyond.

Naturally, since I myself am a writer, I do not wish the ordinary reader to read no modern books. But if he must read only the new or only the old, I would advise him to read the old.