The Common Lisp standard is definitely neither pure, nor simple, nor consistent, but it is pragmatic, practical and powerful. Scheme is a fun learning toy, but

The Common Lisp standard is definitely neither pure, nor simple, nor consistent, but it is pragmatic, practical and powerful. Scheme is a fun learning toy, but I wouldn't use it for a production system. As for Clojure? I'd like to get around to taking a serious look at it someday, but I do somewhat emotionally & irrationally blame it for stealing the momentum of the Lisp resurgence of the late 2000s. It probably has some good ideas, but it's also pretty radically different from Lisp, which is (under the parentheses) a fairly traditional language.