Happy Anniversary, AAAI and AI Magazine!

This special issue celebrates the anniversary by presenting perspectives on AAAI's history, on the future of AAAI, and on the past and future of artificial intelligence. It highlights the many voices contributing to AAAI by featuring personal remembrances and visions from many people, including founders of AAAI, presidents who guided the society's development, and others spurring on AI research and applications. While a single issue can only scratch the surface, this special issue clearly illustrates the spirit, accomplishment, and optimism that will drive the next 25 years. It is fitting for AI Magazine to present such a commemoration: 2005 is the twenty-fifth anniversary of the magazine as well. From the beginning, AI Magazine has brought the AI community together to share ideas and advances and to introduce newcomers to the challenges and accomplishments of the field.