Throughout its history, the United Nations family has celebrated diversity and promoted the rights and well-being of persons with disabilities, including learning differences and developmental disabilities. In 2008, the Convention on the Rights of Persons with Disabilities entered into force, reaffirming the fundamental principle of universal human rights for all. Its purpose is to promote, protect and ensure the full and equal enjoyment of all human rights and fundamental freedoms by all persons with disabilities, and to promote respect for their inherent dignity. It is a vital tool to foster an inclusive and caring society for all and to ensure that all children and adults with autism can lead full and meaningful lives. The United Nations General Assembly unanimously declared 2 April as World Autism Awareness Day (A/RES/62/139) to highlight the need to help improve the quality of life of those with autism so they can lead full and meaningful lives as an integral part of society.