Short extracts from the classics, the series was called "Penguin 60s Classics" not because they were written in the sixties, but because they only cost sixty pence. [The price was on the back]
On the one hand, these tiny little books are ideal for carrying in the pocket, hardly larger than a drinks coaster, they are perfect for anyone who wants to read on the bus without carrying a heavy tome around.
On the other hand, I'm not sure that we can really do justice to something like the Iliad when we cut it up into smaller and smaller pieces to read in those odd moments between.
I once met a fellow who was studying English Lit at a university in another country and he showed me, with pride, the anthology he had to read, a massive collection of highlights and extracts and summaries which was indended to concentrate the entire essence of English Literature into one single volume. Useful, perhaps, but I felt uneasy. These mini volumes have the same effect.