I saw Richard Stallman give a talk while rubbing ointment into his feet. And when I was at high school looking around my prospective uni, I got help from most

I saw Richard Stallman give a talk while rubbing ointment into his feet. And when I was at high school looking around my prospective uni, I got help from most of my questions from a random bearded guy in the compsci building who was wearing socks and sandals. He turned out to be the professor specialising in programming paradigms / AI.