In the depths of his soul Ivan Ilyich knew that he was dying... he simply did not, he could not possibly understand it. The example of a syllogism he had studied in Kiesewetter's logic - Caius is a man, men are mortal, therefore Caius is mortal-- had seemed to him all his life to be correct only in relation to Caius, but by no means himself. For the man Caius, man in general, it was perfectly correct; but he was not Caius and not man in general, he had always been quite, quite separate from all other human beings...And Caius is indeed mortal, and it's right that he die, but for me, Vanya, Ivan Ilyich, with all my feelings and thoughts-- for me it's another matter. And it cannot be that I should die. It would be too terrible.So it felt to him.
