As a whole your essay is good but it's not outstanding. First of all your examples are only from the Russion literature and Pushkin. Your examples are accurate but in my opinion your essay will get higher score if you put some example from other field - even from your own life. The conclusion is too short but it's nice. You have used many 'SAT' words. I think that you would get 9-10 out of 12 for this essay.