Abstract
According to the results of medieval studies, modern rationalism depends on late Medieval Age and medieval nominalism. Reconstructing some of Ockham's innovations it is possible to open a new view of the development of modern subjectivity: Ockham's ontological individualism, his thesis that unnecessary individuals are epistemologically prior to universals and that evident knowledge of individuals is possible, his theological nominalism and his expliction of God's omnipotence and his creation, his logic of supposition and the use of his ,,razor" are essential innovations at the end of the Medieval Age. In this way, it can be substantiated, in contrast to the classical prejudicial view of history of philosophy, that the crystallization of modern subjectivity as a postmedieval rationalism was basically influenced by the innovations of Ockham's nominalism