Abstract: In the view of Early German Romanticists, Fichte did not satisfy with dualism and non-radicality of Kant’s transcendental philosophy, and made efforts to deduce and derive a closed and complete system of knowledge from an unconditional first principle. However, his philosophy has many difficulties in form and content. Therefore, it should replace Idealism with Realism, deduction with the alternating proof, the subjective abstraction and speculation with the historical description and exploration. Reality is always cognitively opaque and inaccessible to consciousness to some degree, but this is not the reason for laziness in thought for the truth seeker. On the contrary, he should keep an open mind, and seek it forever. Thereby, he can increase his knowledge and will be cultivated.

Key words: Idealism, Foundationalism, Realism, Alternating proof