The necessity to justify the state comes directly from Fichte’s speculative
attitudes. Man, i.e. his I, is the core of every thought, existence and every value.
The essential and highest value of man, which is the foundation of his
existence, is freedom. Freedom is a means of man’s existence, because he is
determined through the freedom of his actions. In order to exist, every state
has to deprive each citizen of part of his natural freedom. Therefore, the state
needs justification for that, which Fichte does by giving a rational explanation
of its existence. He does it by proving that man exercises his right of ownership
through his freedom, which requires a contract which guarantees safety to
every individual. That is how the state comes directly from the need of the
reason and its purpose is to establish legal relations between people and to help
them progress in culture toward freedom.