Sul problema ontologico nel pensiero di Werner Heisenberg

This paper examines the deeper philosophical core of Heisenberg's thought. This core is regarded as a part of the reflection on the ontological problem raised by modern physics, and, in particular, by quantum mechanics. Two main aspects of it have been detected: an early representation of the theory-reality problem and the ontological question about the essence and the nature of mathematical knowledge. By highlighting two important and very different Heisenberg's position about the latter topic, a general point of view on the whole argument is made clear.