MOST FAMOUS IRENTITY THEORIST IN OUR TIME x John Jamieson Carswell Jack"Smart AC(born 16 September 1920)is an Australian philosopher and academic who is currently Emeritus Professor of Philosophy at Monash University, Australia. He works in the fields ofmetaphysics, philosophy of science, philosophy of mind, philosophy of religion and political philosophy x/ Ullin Place(1924-2000)was a British philosopher and psychologist. Along with JJ C. Smart, he developed the identity theory of mind x Herbert Feigl (December 14, 1902- June 1, 1988) was an Austrian philosopher and a member of the vienna CircleMOST FAMOUS IDENTITY THEORIST IN OUR TIME  John Jamieson Carswell "Jack" Smart AC (born 16 September 1920) is an Australian philosopher and academic who is currently Emeritus Professor ofPhilosophy at Monash University, Australia. He works in the fields ofmetaphysics, philosophy of science, philosophy of mind, philosophy of religion, and political philosophy.  Ullin Place (1924–2000) was a British philosopher and psychologist. Along with J. J. C. Smart, he developed the identity theory of mind.  Herbert Feigl (December 14, 1902 – June 1, 1988) was an Austrian philosopher and a member of the Vienna Circle