What is the author's tone in the memoir, With God in Russia?

With God in Russia by Walter J. Ciszek is the author's account of his experience in Russia when he was arrested and imprisoned as a political prisoner for fifteen years during World War II. As such, the tone is appropriately serious; however, Ciszek does not play on sympathies and makes no attempt to evoke pity. The story does not need another layer of drama or tragedy - it attained that level on its own merits.