The status of inaugural dissertation of Kant in his critical philosophy

Kant's philosophy consists of two pre-critical (until 1770) and critical stages. Inaugural dissertation written in 1770 shows Kant in the middle of his flight. Essentially, in the history of philosophy the passage times is very important because it can us knew philosophical issues in their origination and formation period. It also helps us to know more about the solutions and innovations as well as terminology of certain philosophy. In his dissertation Kant makes a distinction between sensibility and reason and allocated phenomenal knowledge to the sensibility and nominal one to the reason. He also recognized the great part played by time and space as forms of perception. A while the quality of correspondence of rational concepts with non-sensual objects attracted his attention. Confronting this issue he confined the rational concepts to the phenomenal world but to the effects of Hume, s critiques about causality, application of those concepts on phenomenal world also is being questioned and thereby ground is paved for introducing the prior doctrine in critical era of Kant.