"Serkin is the exponent of the Austro-German tradition. Arrau, also German-trained, is more eclectic—a pianist who seems to play everything from Bach to Prokofieff (he has looked at atonal and serial music as avant-garde as Boulez but has not felt impelled to play it in public)."
January 1, 1970
https://en.wikiquote.org/wiki/Claudio_Arrau