Tolstoy in search of the meaning of life..
After he looked for it in science and philosophy (both fail him) he turns to religion... Here the book turns from a rational search, into an irrational (although he tries to rationalize the move, which he does poorly) surrender to the irrational and simple believe of everyman..
At the end Tolstoy discovers problems within theology and the book closes at him hoping to discriminate truth and falsehood in "the teachings".. which he, then still regards as containing indubitable truth..
I think the great Tolstoy fails here.. By that I mean that I am disappointed by the poor thinking not the writing..