By literary essay, we mean a development of ideas, usually written, in which a question, a subject or a work of mind is examined in detail. It is true that the term "essay" has its origins in Latin: "dissertatio". So rhetorical, it is intended to endow the proven dissertator with a good oratorical sense, as well as that of reason and good writing; for it is dissociable from the domain of the beautiful letter. Its literalness grants it a place of choice in the field of knowledge, given its inescapable scientific weight which makes it entitled to an obligatory assimilation for any major scientist user of the beautiful letter, especially to the worthy philosophical spirit.The objective is to improve the performance of the users remaining at the bottom of the scale, as it is to be noted with bitterness that the result in term of figure can be satisfactory for a new state graduate, as long as in term of real knowledge it is the fiasco which results from it.