This is not the most impressive piece. Two of the main complaints about "Lisp" are that it's not really a functional language and that there aren't enough libra

This is not the most impressive piece. Two of the main complaints about "Lisp" are that it's not really a functional language and that there aren't enough libraries/the standard library isn't what it should be. These are specific to Common Lisp. Clojure gives you a functional-first Lisp, access to all Java libraries, and a decent standard library. The Common Lisp standard is very old, even if you look at the date it was finalized (1994), but most components are from a much earlier period than 1994.