Which theme does leo tolstoy explore in this excerpt from the death of ivan ilyich "then why does it mean? why? it can't be that life is so senseless and horrible. but if it really has been so horrible and senseless, why must i die and die in agony? there is something wrong! "maybe i did not live as i ought to have done," it suddenly occured to him. "but how could that be, when i did everything properly? " he replied, and immediately dismissed from his min this, the sole solution of all the riddles of life and death, as something quite impossible.