Richard (Dick) Kadison passed away on August 22, 2018. He was the Pasquale Porcelli Lecture Series speaker in 2007 and a visiting professor at LSU during the spring semester 2008. Dick Kadison was a leader in the theory of operator algebras. He became a member of the National Academy of Science in 1996, and he was a fellow of the AAAS and AMS. In 1999 he was awarded the Leroy P. Steel Prize for Lifetime Achievement.