No need. Please read this first.
The most priceless gem in there (at least for me):
Dennis Ritchie used “lvalue” to describe C (e.g. see [K&R,1978]), but left out “rvalue”, considering “lvalue” and “not lvalue” sufficient.
Stroke of a genius, in it’s true form.
ps: if you are of a less abstract disposition, please consider this article. One of the better explanations on the subject.