What nationality was Karl Abraham's "best pupil"?
Karl Abraham Karl Abraham (] ; 3 May 1877 – 25 December 1925) was an early important and influential German psychoanalyst, and a collaborator of Sigmund Freud, who called him his 'best pupil'.
Abraham Leon Abraham (Abram) Leon (1918–1944) (born Abraham Wejnstok), was a Belgian Jewish Trotskyist party leader and theorist.