„Thus Russia has only one goal, to become the largest power as leader of all Slavic peoples. That would mean about the same as if England or the United States or Germany wanted to be the leader of these three nations plus Denmark, Sweden, and Norway, as well as Holland and Belgium because these languages are related.“
(Franz Boas, German-American anthropologist, in a personal letter to his son, British Columbia, August 15, 1914, in: The Ethnography of Franz Boas: Letters and Diaries of Franz Boas Written on the Northwest Coast from 1886 to 1931, compiled and ed. by Ronald P. Rohner, Chicago and London: The University of Chicago Press, 1969, p. 273.)