"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."

“He is an outstanding pharmacologist and at the same time a man who is obsessed with popularizing – in the best sense of the word. He does it great, gathering thousands of listeners on various occasions.”

“A truly Renaissance personality. Absolutely undisputed authority, world-renowned scholar, a real neuroenthusiast who can also spray such a cascade of wit and humor that all anecdotes should hide!”

“Empathy and aggression – although seemingly very distant from each other – have a largely similar neurobiological background and are often intertwined. Besides, our entire legal system is based on the fact that excessive empathy activates centers of aggression.”

“As I walk through my beloved Krakowski Park and pass by a group of young people from which I can smell beer, I give them a wide berth. But when I feel the weed, I go boldly through their group and sometimes chat. Yes, the abuse of marijuana causes trouble with memory, concentration, but it is a short-lived condition. I'm not talking about extreme cases, but there are few of them. Less than after alcohol. Oneself should sometimes detach from reality to deal with it somehow.”

“I met Jurek many years ago when he was only little older than his beloved grandson now. And he was just as nice and at the same time extremely handsome!”

“With all due respect for the title of professor. Vetulani, however, is a unique moron.”