Rich Hickey is the creator of Clojure and Datomic. He’s a prolific speaker and has a lot of great ideas about programming. His impact on the future of programming is ongoing and extends well beyond Clojure. This is a collection of his talks, interviews, and articles.
Robert Martin is an influential figure in the industry. He was one of the people who drafted the Agile Manifesto. He was instrumental in starting the software craftsmanship movement. And he blogs about and makes video courses on software design.