In his talk Rich Hickey made an overview of the major features of Clojure and the design rationale behind them. Except for being Lisp-1, as far as I understand, Clojure is mostly based in and inspired by Common Lisp. Moreover, it tries to push some of the CL technologies to even purer abstraction and generality. I've tried to categorize the discussed features in their relation to Common Lisp: Take