Peter A. Kropotkin, John T. Bealby, Walter A. Phillips. and Donald Mackenzie Wallace, 1911 Encyclopædia Britannica, Volume 23… (1911)
“ Thus appeared the grand-prince of Suzdal or Vladimir, of Tver, of Ryazan and of Moscow—all irreconcilable rivals with little or no feeling of blood-relationship. The more ambitious and powerful among them aspired not to succeed but to subdue the others and to take possession of their territory, and the armed retainers, who were wont formerly to wander about as free lances, gave up their roving mode of life, settled down permanently in one principality, became landed proprietors, and sought to share as boyars the princes' authority. ”
