A true genius... Roald Dahl is my hero. (David Walliams). The giraffe, the pelican and the agile monkey set out to prove that they are the best window-cleaning company around. Roald Dahl, the best-loved of children's writers, was born in Wales of Norwegian parents. His books continue to be bestsellers, despite his death in 1990, and total sales are over 100 million worldwide! Quentin Blake is one of the best-known and best-loved children's illustrators and it's impossible now to think of Roald Dahl's writings without imagining Quentin Blake's illustrations.