Yevgeny Zamyatin said this quote
“ Do you believe that you will die? Yes, man is mortal, I am a man, ergo... No, that isn't what I mean. I know that you know that. What I'm asking is: Have you ever actually believed it, believe it completely, believe not with your mind but with your body, actually felt that one day the fingers now holding this very piece of paper will be yellow and icy...? ”