Resurrection by Leo Tolstoy

One of the most widespread superstitions is that every man has his own special, definite qualities; that a man is kind, cruel, wise, stupid, energetic, apathetic, etc. Men are not like that. We may say of a man that he is more often kind than cruel, oftener wise than stupid, oftener energetic than apathetic, or the reverse; but it would be false to say of one man that he is kind and wise, of another that he is wicked and foolish. And yet we always classify mankind in this way. And this is untrue. Men are like rivers: the water is the same in each, and alike in all; but every river is narrow here, is more rapid there, here slower, there broader, now clear, now cold, now dull, now warm. It is the same with men. Every man carries in himself the germs of every human quality, and sometimes one manifests itself, sometimes another, and the man often becomes unlike himself, while still remaining the same man. In some people these changes are very rapid, and Nekhlúdoff was such a man. These changes in him were due to physical and to spiritual causes. At this time he experienced such a change.

That feeling of triumph and joy at the renewal of life which he had experienced after the trial and after the first interview with Katúsha, vanished completely, and after the last interview fear and revulsion took the place of that joy. He was determined not to leave her, and not to change his decision of marrying her, if she wished it; but it seemed very hard, and made him suffer.