Friedrich Ludwig Gottlob Frege (8 November 1848 – 26 July 1925, pronounced [ˈɡɔtloːp ˈfreːɡə ]) was a German mathematician, logician and philosopher. He is considered to be one of the founders of modern logic and made major contributions to the foundations of mathematics. He is generally considered to be the father of analytic philosophy, for his writings on the philosophy of language and mathematics. While he was mainly ignored by the intellectual world when he published his writings, Giuseppe Peano (1858–1932) and Bertrand Russell (1872–1970) introduced his work to later generations of logicians and philosophers.
Frege was born in 1848 in Wismar, in the state of Mecklenburg-Schwerin (the modern German federal state Mecklenburg-Vorpommern). His father Carl (Karl) Alexander Frege (3 August 1809 – 30 November 1866) was the co-founder and headmaster of a girls' high school until his death. After Carl's death, the school was led by Frege's mother Auguste Wilhelmine Sophie Frege (née Bialloblotzky, 12 January 1815 – 14 October 1898).
Graham Priest (born 1948, London) is Boyce Gibson Professor of Philosophy at the University of Melbourne and Distinguished Professor of Philosophy at the CUNY Graduate Center, as well as a regular visitor at St. Andrews University. Priest is a fellow in residence at Ormond College. He was educated at the University of Cambridge and the London School of Economics. His thesis advisor was John Lane Bell.
He is known for his defense of dialetheism, his in-depth analyses of the logical paradoxes, and his many writings related to paraconsistent and other non-classical logics.
Priest, a long-time resident of Australia, is the author of numerous books, and has published articles in nearly every major philosophical and logical journal. He was a frequent collaborator with the late Richard Sylvan, a fellow proponent of dialetheism and paraconsistent logic.
Priest has also published on metaphilosophy.
In addition to his work in philosophy and logic, Priest practices Karate-do. He is 3rd Dan, International Karate-do Shobukai; 4th Dan, Shi’to Ryu, and an Australian National Kumite Referee and Kata Judge.