Despite the striking parallels between the Russian novelist and the Athonite monk, it is highly unlikely that St Silouan had ever read Dostoevsky. More probably, the similarities arise because both are shaped by the same living tradition, and both are drawing on the same sources. St Silouan (almost certainly) and Dostoevsky (possibly) have been influenced by a Mesopotamian hermit of the seventh century, St Isaac the Syrian, who writes in a famous passage of his