IJAHP: Saaty/Words from the special issue editor International Journal of the Analytic Hierarchy Process 310 Vol. 9 Issue 3 2017 ISSN 1936-6744 https://doi.org/10.13033/ijahp.v9i3.555 WORDS FROM THE SPECIAL ISSUE EDITOR Dear Friends and Colleagues, It has been very gratifying to me to edit this memorial issue of the IJAHP in honor of Tom Saaty, my husband of 53 years. Tom passed away at the age of 91 on August 14 th this year of cancer. He fought it bravely for more than a year. His energy was a force of nature, staying with him almost to the very end. With that he also had an unbelievable memory; a few days before he died, he was teaching a chaplain visiting him a neat new proof of the Pythagorean Theorem he had learned. In honor of Tom and his work in developing the Analytic Hierarchy Process (AHP) and the Analytic Network Process (ANP), the IJAHP is featuring articles from colleagues who had collaborated with him on research papers, or been visiting scholars at the Katz School of Business Administration at the University of Pittsburgh. They have shared stories of the work they did with him and of their personal memories and experiences. This special issue provides a fresh look at the wide variety of areas into which Tom ventured in applying the AHP, and is a reminder of the breadth of his interests. He was not your dry single-issue mathematician; he was interested in everything around – the whole human experience, the history of human thinking and how the AHP fit in it. He knew the famous works of philosophers and scientists and mathematicians of old and even religion—he could quote chapter and verse from the Bible—and he integrated all this knowledge into his works. Some have said that the most amazing thing about him was his synthesizing ability, how he could grapple with complexity and bring it under control. Enjoy this special issue in Tom’s memory! Rozann Saaty IJAHP, Guest Editor