This biographical sketch is based on materials from the Roman Ingarden Archive, as yet unrecognized in philosophical literature. These materials are preserved in Krakow by Krzysztof Ingarden, the grandson of the philosopher. On their basis, a two‑volume biography was prepared by R. Kuliniak and M. Pandura I am a philosopher of the world (Κόσμου φιλόσοφός εἰμι) – Roman Witold Ingarden (1893–1970), Parts I and II, Wydawnictwo Marek Derewiecki, Kęty 2019–2020). This presentation is an abridged version of those volumes.