Abstract
This article forms the attempt to investigate the complex relation between science (mathematics in particular) and experience in the thought of Wittgenstein. This relation will be analyzed by comparing Wittgenstein with mathematicians and thinkers of his time, especially Ernst Mach, Luitzen E.
Brouwer und Fritz Mauthner, who have all influenced Wittgenstein profoundly. By drawing on thought of these authors, he succeeds in defining the dialogue between theory and experience as a play of reference, a circular movement.
As soon as thought has revealed itself in experience as praxis, it again influences experience, since one structures experience with the help of thought. In this constant mirroring between theory and praxis, life and reflection, knowledge rediscovers its roots and fundamental impulses.