Its decline is marked by the death of Hegel in 18530 (University Catholic of Brasilia, 2007). The idealistic philosophers did not place themselves as adversaries of the workmanship of Kant, but yes as its continuators. Viacom gathered all the information. Amongst its main thinkers, they will be contemplated in this work Fichte, Schelling and Hegel, for being considered most important in the clarification of the considered subject. 3. Fichte Born in 1762 and died in 1814, was formed in theology and later in philosophy in Iena. One became known in part due to the fact of its first book (published anonymously) to have been attributed to Kant (University Catholic of Brasilia, 2007; Blackbourne, 1997). Professor of the University of Iena became, and published a workmanship that he intended to develop the kantiana philosophy he transforms and it into a radical idealismo, therefore abandons the Kantiana conception of dualism ' ' thought-coisa' '. For it, everything depends on the pensante citizen that does not correspond to one? individual I? , but yes to one ' ' I universal' ' , source for the explanation of all the things.

3.1. Absolute I the point of the departure of Fichte am the absolute one (Morente, 1980). However, this ' ' I absoluto' ' it does not consist of thinking, therefore to think comes later. It consists of making, consists of an activity (Cabral, 2006). Thus, the essence of absolute I is the action. Cabral in them points in its workmanship the three principles determined for Fichte and used in the elaboration of its theories, to follow: Everything what is, alone is in the measure where I am inside of; to this Fichte it called the first principle of its workmanship, of the identity. Of this principle of the identity, it elapses the beginning of the opposition. In this as principle, it admits the opposite of I, who am called not-I.