"The professor was a charismatic person, lectures and crowds of listeners gave him great pleasure. Undoubtedly, an additional feature that attracted crowds was his sense of humor, also in relation to himself. Not only lectures, but also ordinary conversations with Jurek were full of humor and jokes. He had an amazing personality. His energy, knowledge sharing did not diminish with age, but even being an extremely busy person because of his scientific activities and numerous lectures given throughout Poland, he never refused to lecture as part of the "Brain Week" and write an article. He is an unrivaled model of a neuroscientist, social activist and popularizer of science."