What are the best-selling books and series of all time?

Presentation Notes:

With so many different formats, editions, and languages, counting the number of units sold of a book is tough – even with contemporary titles. Then there are the classics that have been published across centuries by many publishers and in many languages and editions. I’ve listed such classics, notably The Holy Bible, in a separate section.

I’ve also highlighted several books series as a separate category. But after referring to numerous ” sort of definitive” and “not quite authoritative” lists, here is a consensus of best-selling books of all time.

Any surprises for you? How many have you read?