"R.U.R. (Rossum's Universal Robots)" by Karel Čapek is a science fiction play written in 1920. It introduced the word "robot" to the English language. The play is set in a factory that produces artificial workers from synthetic organic matter—living beings of flesh and blood who serve humanity. When Helena arrives to advocate for robot liberation, she encounters a world transformed by these artificial beings. But the very universality of robots may present an unforeseen danger to humanity itself. (This is an automatically generated summary.)
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.