Hey, my friend loves sci fi, so i figured I would surprise them with a really old nostalgic sci fi book. This is my friends "secret" so thats why I am substituting they instead of a he or she. They said they have read some Jules Verne, but it isn't their favorite. So, who can recommend a good sci fi book. I was looking to get them a very old one, like maybe something written in the 19th century. But really any suggestions are welcome. So, can anyone point me in the right direction?