J. Holland Rose,
The Life of Napoleon I (Complete…
“ After the experiences of Austerlitz and Friedland, the advantages of a defensive campaign could not escape the notice of the Czar. As early as October, 1811, when Scharnhorst was at St. Petersburg, he discussed these questions with him; and not all that officer's pleading for the cause of Prussian independence induced Alexander to offer armed help unless the French committed a wanton aggression on Königsberg. Seeing that there was no hope of bringing the Russians far to the west, Scharnhorst seems finally to have counselled a Fabian strategy for the ensuing war ”
