The consept of subject, which exist in a “transcendental” manner in traditional Philosophy -especially in Medieval Philosophy-has been considered as the “I”, close to the meaning used today since 17th century by Descartes’s start his Philosophy whith the cogito(I think) it has become a rational and founding being. Fichte has developed a new philosophy that put the ego to center, on the basis of intersubjectivity, in order to change the meaning of the consept of subject which was handled as an ısolated consciousness by Descartes and Kant, and to make human freedom possible and free it from the nature’s determination. This new ego is the highest principle of practical philosophy rather than theoretical and it is...