In general, philosophical point of view of direction has been very eclectic, do not share the socio-political, cultural and philosophical foundations.
A widely known critic of the Sophists and Socrates sokratikov, and Plato.
By the IV. started declining fallacy. Gradually, the exercises of the Sophists went philosophical concept and remained only the basic foundations of rhetoric that allows the management of words and abstract concepts to prove or disprove anything.