One of the main goals of object-oriented languages (OOLs) 
is to unify their universe:
{\em ``every entity of the language is an object.''}
The {\em class} concept, however, usually does not follow
this wish: a class being not a real object, i.e., created from a class.
The {\em metaclass} concept introduced in Smalltalk-80,
attempts to give classes a first class citizenship but complicates the
instantiation scheme without solving its fundamental limitations:
the only partial specification of the class at the metaclass level,
and the fixed number of meta-levels.

Some more recent approaches, as in Loops and then CommonLoops,
tend towards a better unification, but reveal the same limitations.
We propose to go one step further and present an ultimate new model
for an optimal simplification of the {\em class/object} concept,
while keeping the {\em class} abstraction.
In this model, implemented by ObjVlisp\footnote{
        This research was supported by the ``Object group'' of the
        Greco de Programmation, CNRS, France.},
every object is an instance of a class,
and a class is a true object fully specified at the meta-level.
A {\em metaclass} is a true class inheriting from another one.
Because ObjVlisp is built on a reflective architecture,
the user has  uniform access and control to all the levels of the
language: class level, metaclass level\ldots
He can add new levels and the metaclass links can be created indefinitely.

Finally, we suggest to clarify the Smalltalk terminology with a
new definition for {\em class variables}:
the instance variables of a class - treated as an object -
become the class variables of this class, explicitly 
expressed at the metaclass level.