This essay deals with the ambivalence and wealth of concepts in general, and with the political concepts in particular. Modern political concepts are complex and controversial, being the formulation of their meaning an important requirement to solve the problems of present age. This essay collates the diferences and similarities of the History of Concepts and the historiography of political discourse, and hints the aporetical nature of the political concepts.Este ensayo trata de poner de relieve la ambivalencia y riqueza de significados propias de los conceptos en general y, en particular, de los conceptos políticos. Los conceptos políticos modernos son complejos y controvertidos, y la formulación de su significado es un requisito indispens...