"I started writing books for children because I could illustrate them myself and because, in my innocence, I thought they'd be easier"

Mark Haddon's quote talks to the concept that composing books for children can be a simpler task than writing for adults. He suggests that he was ignorant in his belief that writing for children would be simpler, but he was drawn to the concept of being able to illustrate the books himself. This suggests that he was looking for an innovative outlet and a method to reveal himself. He likely found the idea of creating stories and illustrations for children to be a satisfying and rewarding experience. His quote likewise speaks to the concept that writing for children can be an effective method to reach and motivate young minds. By composing for kids, Haddon had the ability to share his stories and concepts with a brand-new generation of readers.