What should I do with books with obscene descriptions?

I bought Stefan Zweig's books because I am very interested in human psychology. Some of his books had obscene descriptions of male-female relationships. I wasn't reading there. Some of his books did not contain such content at all. Now I want to throw it out because I realized that it is inconvenient for me to read books with such content. Should I sell these books or recycle them? I need your advice.