Originally Posted by ollyoxenfree
At 14, ds started reading some classic futuristic dystopian novels - Clockwork Orange, 1984, The Chrysalids, Brave New World. He enjoys Neil Gaiman - especially American Gods, but also his graphic novel series Sandman. In graphic novels, ds also first read Watchmen when he was about 14 y.o.
Since he's a gifted student, he might like Ender's Game and the sequels by Orson Scott Card. It's also set in the future.
Warning - most of those books have adult content with sex and violence. Gaiman also writes young adult books, so you might try those - ds enjoyed The Graveyard Book last year, even though it's written for a much younger age.
The "Among the Hidden" series by Margaret Peterson Haddix might appeal - it's set in the near future, in a society that has a 2-child per family policy (like China's one-child policy), and it's about a 3rd born boy who has to stay hidden from everyone. Again, it's for younger children (I'd say 9 to 12), but the social issues are quite mature. It isn't heavy on the science fiction, it's written as if it could be our society in 10 years or so, so it may be more appealing than some other futuristic novels.
I think it's hard to avoid sex scenes for teenagers who are reading adult-level literature. If you are really concerned, perhaps try classics like Frankenstein, Dracula, Sherlock Holmes, some Dickens or Twain, Call of the Wild by Jack London....
I am glad you mentioned "Among the Hidden" as I have been trying to remember the name of that book for a while now.
I have to second "Ender's Game". Awesome book and I normally don't like sci-fi but that was VERY good.
Now, unrelated to the above quote. The Mortal Instruments series, while it does contain vampires, isn't anything like Twilight. I found it very enjoyable to read, and really, while the main character is technically a girl, the books are really about a GROUP of characters (3 boys, 2 girls).
Oh, and for fantasy, how about the Belgariad by David Eddings. He has several series, but this was my favorite. I don't remember sex scenes, but there probably was some innuendo.