Stories of your life and others is a must read - truly beautiful, deep and thought provoking writing that I can highly recommend. https://www.goodreads.com/book/show/223380
As I said when I reviewed that book on Goodreads, if I'd spent the £11.40 for the book and only received that story, it would have been more than worth it.
That was more than a decade ago, and I still think about it more often than most sci-fi stories I've read.