I have a deep admiration for Dostoevsky. A Russian Orthodox priest that I know once told me that he considers him to be a saint. He suffered deep doubts with the faith and asked Christ for clarity. Christ let him bask in the darkness and it is in the darkness that his faith in Christ was made purer. In his words,
"It is not as a child that I believe and confess Jesus Christ. My hosanna is born of a furnace of doubt."Blessed be the furnace of doubt.