Andrzej Galeski and Jacek Ulanski's article on the life of an "outstanding scientist in the field of physics and physical chemistry of polymers, founder of scientific school of polymers at the Faculty of Chemistry, Technical University of Lódz, and in the Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences in Lódz, who passed away on 5th October 2005: Marian Kryszewski."