"Above all, a man of inexhaustible energy, drawing life with full handfuls and a great provocateur. However, in the good sense of the word. As he admitted in an interview with me, which we published as a book, he felt almost all his life a fool who wanted to make people laugh and at the same time stimulate them to think. Anyone who has ever listened to the lecture of Professor Vetulani, knows what I'm talking about. That's why I find it so difficult to accept His death. Unreasonable, because it is a consequence of a tragic accident. I could not be present at his 80th birthday, so I was hoping to celebrate the 85th and then the 90th and subsequent jubilees with his family and lots of friends. I was hoping to see him during these jubilees, bursting with energy and wit, as He did usually. Unfortunately, life has written a different scenario."
January 1, 1970
https://en.wikiquote.org/wiki/Jerzy_Vetulani