Janáček as theorist

In addition to his activities as a composer Leoš Janá?ek was a prolific literary personality whose works include not only letters feuilletons criticisms autobiography ethnographic and pedagogical studies but also numerous articles dealing with music theory. They are unique documents stimulating diverse exciting and sometimes bewildering they reflect Janá?ek's intense involvement with contemporary trends in philosophy ethnography physiology and music theory and his struggles in these worlds; yet they can hardly be found on a single bookshelf outside the Czech Republic (From the Introduction).