The Crayons' Colour Collection Popular mathematics then we can optimise ourselves

then we can optimise ourselves into a state of perpetual bliss

He'll set you on a path toward healing

You only get one soulmate

and longtime crush

thrilling' Guardian

The Crayons' Colour Collection Popular mathematics then we can optimise ourselvesA fun box set of four board book adventures starring Red, Blue, Green, and Purple Crayons, perfect for the youngest readers! This collection of four fun board books about Red, Blue, Green and Purple Crayons introduces very young readers to the crayon characters from the internationally bestselling The Day the Crayons Quit, showing how much fun it is to colour and to use your imagination!