"Tadzik Gumiński (later a reader in pediatry), who was just like me fascinated by astronomy, lived at Szpitalna Street, and I lived at Garncarska Street. Not far from our homes, at Podwale, there was an optical store Maruńczak and the Company (in the place where the scientific bookstore is now located). In this optical store, as little kids, we bought lenses and other parts necessary to build a telescope. This telescope, of course, was very simple. But thanks to it, we spent many nights observing the sky, deciphering star systems. It was really great fun."