Heinz, you were a great friend and colleague.
I loved your sense of humor and remember how
you encouraged me to take on the chair's job:
It's not sufficient to be incompetent, you have
to prove it!
Heinz, you and Barbro always took care of your grad students as we were your own children - and you our academic parents. We cannot thank you enough for this great generosity. You are in our hearts forever.
My world has become a bit greyer and emptier with the departure of Heinz (and Barbro!) Kreiss
Heinz! I am very thankful for having you as my co-advisor and teacher. I learned so much from you, which goes far beyond math and science. We had great times together. You have always been and will remain to be a great source of inspiration for me. You will be remebered.