As such the phenomenology of error is an ideal and eternal circle, like the eternal circle of the truth. Its stages are eternally traversed and retraversed by the spirit, being the stages of the spirit itself. At every instant of the life of history and of our individual life there are represented the stages that have been surpassed and must again be surpassed: the lower stages return and announce beforehand the higher. [Sidenote: _Returns to anterior philosophies, and their meaning._] In this lies the origin of a fact which cannot fail to attract attention in the history of philosophy: the tendency which is found there, to _return_ to one or other of the philosophies of the past, or, more correctly, to one or other of the philosophic points of view of the past. The thirteenth century returned to Aristotle, the Renaissance to Plato; Bruno revived the philosophy of Cusanus, Gassendi that of Epicurus; Hegel wished to renew Heraclitus; Herbart, Parmenides; in recent times a return has been made to Kant, and in times yet more recent to Hegel. These are spiritual movements, which must be understood in all their seriousness. This consists wholly in the need of the philosophic spirit of a certain moment, which, struggling with an error, discovers the true concept with which it should be corrected, or at least, the superior and more ample suggestion, to which we must pass in order to progress. And since that concept or suggestion had already been represented in an eminent degree in the past by one particular philosopher, or by one particular school, they speak of the necessity of again asserting the superiority of that philosopher and his school against other philosophers and other schools. In reality neither Aristotle nor Plato returns, nor Cusanus nor Epicurus, nor Heraclitus nor Parmenides, nor Kant nor Hegel; but only the mental positions of which these names are, in those cases, the symbols. The eternal Platonism, Aristotelianism, Heracliteanism, Eleaticism are in us, as they were formerly in Plato and in Aristotle, in Heraclitus and in Parmenides. Divested of those historical names, they are called transcendentalism and immanentism, evolutionism and anti-evolutionism, and so on. To the philosophers of the past, as men of the past, no return is made, because _no return is possible._ The past lives in the present and the pretence of returning to it is equivalent to that of destroying the present, in which alone it lives. Those who understand _ideal_ returns in this _empirical_ sense, do not in truth know what they are saying. [Sidenote: _The false idea of a history of philosophy as the history of the successive appearances in time of the categories and of errors._]