 The two men became lifelong friends, Freud finding Binswanger's 1912 illness "particularly painful", and Binswanger offering Freud a refuge in Switzerland in 1938.Binswanger became a member of the early 'Freud Group' Jung led in Switzerland; but nevertheless wrestled throughout his life over the place of psychoanalysis in his thinking – his 1921 article on 'Psychoanalysis and clinical Psychiatry' being only one landmark of that lifelong struggle.Binswanger was further influenced by existential philosophy, particularly after World War I, through the works of Martin Heidegger, Edmund Husserl, and Martin Buber, eventually evolving his own distinctive brand of existential-phenomenological psychology.