eye opener for me

This is from Steve Tilkov's blog.
"What basically determines whether a language is useful is whether it can be used to solve real world problems efficiently. And this, in turn, depends very much on the libraries available — and the only chance for any language to compete with Java or C# is if it’s based on the JVM/CLR
"

I hold the same view for a while. That is why I'm interested in Jyhon as vast libraries Java has. Now I wanna know about add LISP like features on JVM such as macro.