Ann Harris Yasuhara, 82, died at her home in Princeton on Wednesday, June 11 2014. A logician and computer scientist, she was known for combining her Quaker faith with action focused on peace, social justice, racial equality, and the environment. Born on March 8, 1932 in Madison, Wisconsin, her parents were Julian Earle Harris, a noted French language educator at the University of Wisconsin, and Elizabeth Marshall Harris, a sculptor. Ann studied cooking and fashion design in Paris, attended Swarthmore College, and earned her bachelor’s degree, master’s degree, and doctoral degree in mathematics from the University of Illinois. In 1970 she and her husband, Mitsuru, settled in Princeton and pursued their interests in mathematics, music, and art. In 1972, Ann joined the new department of computer science at Rutgers University, where she was an associate professor. She is survived by Mitsuru Yasuhara, her husband of 49 years; her godchildren Josue Rivera-Olds, Grecia N. Rivera, and Julio R. Rivera; cousins including Sarah Rogers Pyle Sener (Pikesville, Maryland), Jan Marshall Fox, J. Laird Marshall, Nancy Marshall Bauer (Madison, Wisconsin), Jane Marshall (Birmingham, Alabama), Richard H. Marshall (Toronto, Canada), James R. Marshall (Gardnerville, Nevada), and Barbara Figge Fox (Princeton, New Jersey) and their families.