[time_management]

Java, then Clojure. I've never used Clojure, but my understanding is that it's a Lisp dialect that targets the Java VM.

Do learn a language like Lisp, Ruby, or Ocaml, though. Once you get used to the functional paradigm, you'll realize how much more powerful these languages are, and you'll never go back.

[PieSquared]

Yup, you'll never look back! ...unless you need to get a job, of course...

Though Python is used more and more now, you can definitely get jobs in languages other than Java and C# and such... But sadly, not Lisp or Ocaml though, at least not easily.