John S. C. Abbott,
The Empire of Russia: From the Remotest Periods to the Present Time
“ Upon their return to Russia, the utter despotism of the tzar seemed more than ever hateful to them. Several conspiracies had been organized for his assassination, and now the plan was formed to assassinate the whole imperial family, and introduce a republic.Nicholas was seriously alarmed by the danger which threatened, though he was fully conscious that his only safety was to be found in courage and energy. He accordingly made preparation for the administration of the oath of allegiance to the army. "I shall soon," said he, "be an emperor or a corpse." ”
