Jca, I wholeheartedly agree with you.

You can find books in nearly every language (if it is written at all) where the author "proves" that his language is the most versatile, enables its users to express subtleties which can't be expressed in any other language, and is therfore the highest developed one in the world.
This is regularily done by taking phrases or even single words which don't have an exact equivalent in any other language (which the author believes to know).
Umberto Eco wrote about this subject (I think it was in "Foucault's Pendulum") listing nearly each of the European languages which somebody hat declared sometime as superior to any other known language.