Derek Parfit

For his entire academic career, Parfit worked at Oxford University, where he was an Emeritus Senior Research Fellow at All Souls College at the time of his death. He was also a visiting professor of philosophy at Harvard University, New York University, and Rutgers University. He was awarded the 2014 Rolf Schock Prize "for his groundbreaking contributions concerning personal identity, regard for future generations, and analysis of the structure of moral theories."

Parfit met Janet Radcliffe Richards in 1982, and they then began a relationship that lasted until his death. They married in 2010. Richards believes Parfit had Asperger syndrome.

Parfit rose to prominence in 1971 with the publication of his first paper, "Personal Identity". His first book, Reasons and Persons (1984), has been described as the most significant work of moral philosophy since the 1800s. His second book, On What Matters (2011), was widely circulated and discussed for many years before its publication.

He then studied Modern History at Balliol College, Oxford, graduating in 1964. In 1965–66 he was a Harkness Fellow at Columbia University and Harvard University. He abandoned historical studies for philosophy during the fellowship.

Derek Antony Parfit FBA (/ˈpɑːrfɪt/; 11 December 1942 – 1 or 2 January 2017) was a British philosopher who specialised in personal identity, rationality, and ethics. He is widely considered one of the most important and influential moral philosophers of the late 20th and early 21st centuries.

Parfit was born in 1942 in Chengdu, China, the son of Jessie (née Browne) and Norman Parfit, medical doctors who had moved to Western China to teach preventive medicine in missionary hospitals. The family returned to the United Kingdom about a year after Parfit was born, settling in Oxford. Parfit was educated at Eton College, where he was nearly always at the top of the regular rankings in every subject except maths. From an early age, he endeavoured to become a poet, but he gave up poetry towards the end of his adolescence.