In 2013, Mark Warren wrote in Esquire about how, at age 30, he finally experienced a father’s love through Dieter, his father-in-law:
A few years ago I was working on a book project, and the deadline was crushing me. I hadn’t given myself enough time to write, and I was panicking, so I left Jessica and the kids in New York and moved out to Princeton with Dieter for a month, to race the clock. I quickly established a routine of working day and night, and without a word being said, Dieter made himself my twenty-four-hour valet. Every morning as I awoke, he’d bring me a cup of coffee. “Would you like to see the menu?” he’d ask. “Or shall we just have the chef whip up something for you?” If I fell asleep on the couch, he would cover me with a blanket. It was the fall, and every morning he and I would take a walk in the changing colors, and we would talk through the day’s writing, and every couple days, Dieter would read pages for me and tell me what he thought.
He knew that I’d given up on my own father, and he looked on me with a kindness for which I was not at all prepared, that it seemed he had been waiting for just this moment to bestow. Sometimes it was almost too much for me to bear. As he made us dinner, he would ask me about my life and say such encouraging things with love and without qualification, and I would look at him and think, Are you real?