In the UK, it’s World Book Day (which almost explains why my son’s playground is full of kids dressed as Pokémon). A good excuse for this fantastic insight from Carl Sagan:

What an astonishing thing a book is. It’s a flat object made from a tree with flexible parts on which are imprinted lots of funny dark squiggles. One glance at it and you’re inside the mind of another person, maybe somebody dead for thousands of years.

A good reminder that books are a bizarre, brilliant, surreal and in no way inevitable invention.