Ted Chiang's Stories of Your Life and Others is the best, single-author collection of short stories I've ever read. If you like that, you might also enjoy The L

Ted Chiang's Stories of Your Life and Others is the best, single-author collection of short stories I've ever read. If you like that, you might also enjoy The Lifecycle of Software Objects, an absolutely heartbreaking novella about simulated children, and his follow-up collection Exhalation. Orson Scott Card's Ender's Game is fantastic, and it's follow-up, Speaker for the Dead is even better, and my favorite science fiction novel of all time. They won back to back Hugo and Nebula awards. Card is a polarizing figure for his outspoken political opinions, but if ever the art should be separated from the artist, it's Speaker, which is an incredible exploration of empathy and responsibility, in addition to being a gripping, action-packed, science-literate read. Many more in this series, if you get into it. John Scalzi's Old Man's War series is fantastic, if you're into military science-fiction, or even if you're not. Smart, funny, engaging and accessible, and reminiscent of Heinlein at his prime, minus the weird incest fetish. Redshirts, a Star Trek parody, rivals Galaxy Quest and only falls short because Galaxy Quest is so goddamn brilliant. Agent to the Stars is less appreciated, but in my opinion his finest novel, rising way above its goofy premise by taking it seriously, exploring the consequences and treating the characters with empathy and respect. Also hilarious. Seconding Dune, which is a classic for a reason, and Stranger in a Strange Land (though I think The Moon is a Harsh Mistress is a better place to start with Heinlein). Also Neal Stephenson, though I'd suggest Cryptonomicon over Diamond Age.