Ruby is a language designed in the following steps:
* take a simple lisp language (like one prior to CL).
* remove macros, s-expression.
* add simple object system (much simpler than CLOS).
* add blocks, inspired by higher order functions.
* add methods found in Smalltalk.
* add functionality found in Perl (in OO way).
So, Ruby was a Lisp originally, in theory.
Let's call it MatzLisp from now on. ;-)