Ludwig Boltzmann: His Later Life and Philosophy, 1900-1906: Book Two: The Philosopher

After his failure to replace metaphysics by a linguistic approach, Ludwig Boltzmann came to identify the philosophy of science with methodology which, in turn, he considered to be part of science itself, and thus not part of philosophy at all. His definition of philosophy as metaphysics meant that, from his point of view, all philosophers were metaphysicians, himself included.
Boltzmann the philosopher was advised on the improvement of his Weltanschauung by Franz Brentano; to such effect t...