"Clojure has the potential to do for concurrency-oriented programming what Java did for object-oriented programming a decade ago: make it simpler to do properly using a language (or, in Clojure’s case, a “language environment”) that is similar to what programmers are already used to. " -- Bill Clementson
And people, LISP consists of a family of programming languages. There are Lisp dialects like Common Lisp and Clojure. And on top of that, there are many implementations of Common Lisp or Scheme.