I agree for the first part. Common Lisp and Python are my favorite programming languages. I think the second is great for teaching programming and general use (where performance isn't a concern), while Common Lisp, in my view, is a "must-know" for any advanced programmer. Lisp is secret alien technology.

Although to be honest, there's Clojure, which isn't as easy to learn as Python nor as flexible/powerful as CL, but sits in confortable middle ground.