George Cary Eggleston,
Strange Stories from History for Young People
“ Not content with governing Russia in the name of Feodor, he set covetous eyes upon the purple itself, and was resolved to become czar in name as well as in fact. But this was a delicate and difficult task, and could by accomplished only at great risk and by great patience. Boris was a man of undoubted genius, extreme shrewdness, unlimited ambition, and remarkable personal courage; and difficult and dangerous as his task was, he seems never to have faltered in his purpose from the instant of its conception to the time of its execution. ”
