The celebrated Polish avant‑garde artist Stanisław Ignacy Witkiewicz turned form arts to philosophy in the later years of his life. He was in contact with prominent Polish professional philosophers, e.g., T. Kotarbiński and R. Ingarden. He wrote a philosophi-cal treatise of his own and published several essays explaining his views, defending them in fiery polemical tracts. Although an autodidact himself, his erudition on recent philosophical topics, scientific trends and achievements was impressive. To his favorite philosophical ‘enemies’, as he was fond to say, belonged Bertrand Russell, along with other famous thinkers of that time, e.g., A. Whitehead, R. Carnap or L. Wittgenstein.