The purpose of this study is to examine as the theory of acquired character of Schopenhauer, exposed especially in Aforismi, can offer an answer to the question of Kant and Schopenhauer about freedom and necessity. Analyzed the context of the gestation of the concept of "nature" in Kant, alongside the issue of freedom in the third antinomy. From this, take the concept of the acquired character in Schopenhauer as a middle way between the intelligible character and the empirical character, that can make the world of phenomenon less determinated.
