The Path to Salvation: St. Ambrose of Optina 

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Our venerable father Ambrose of Optina (Russian: преподобный Амвросий Оптинский; properly Aleksandr Mikhaylovich Grenkov - Александр Михайлович Гренков, December 5, 1812, Bolshaya Lipovitsa settlement, Tambov guberniya-October 23, 1891) was a starets and a celibate schema priest (iyeroskhimonakh), canonized in 1988 by the Local Council of the Russian Orthodox Church. His feast day is celebrated on October 10, and the finding of his relics is commemorated on June 27. (from Orthodoxwiki)
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