I don’t know. I know the ones that are the greatest triumphs, like the Dumbarton Oaks Museum in Washington D.C. that I worked on with the owners. It was a real collaboration and there was no budget, no money involved. It was just, “If we like that better, we’ll do it that way.” So I had total freedom and it was a simple project to build a little museum, and the owner and I worked together and it was pure delight from beginning to end and it came out very well.

I wasn’t interested in politics in those days, but I was interested in helping people, and I got involved in the Foundation of the Credit Union movement. And, of all the things I’ve been doing, it’s the thing I’m proudest of because no movement has done more good for the people of Ireland, north and south, than the credit union movement.

Oh, hands down, I’m most proud of the people that I’ve trained and the people that have come from my work — I mean from my lab. I think that when I look at these younger people who are now working in their own right, running research laboratories, doing great work, teaching their students, making new discoveries, that’s what I’m proudest of. That legacy of science that stemmed from — originally — just me opening up my shop at Yale University back in 1994.

Yes, it's one of the things that I'm most proud of is the Iberian lynx was extinct. It was declared under extinction and with a new project funded by the European Union, Portugal and Spain started the process of recovering the Iberian lynx. And it took maybe 15 years to recover with the lynx being incubated first in a facility. And then finally there was a day where we have to feel sufficiently comfortable to release the first lynx and then to have the normal reproductive path in the environment. And it worked. Can you imagine? Even a species can be recovered. So, if there is a will, there is the way.

I’ve been mortally opposed to the so-called life-and-death committees that were instituted. When there were many more patients that needed to be dialyzed, and not enough artificial kidneys available, you had the institution of the life-and-death committees. ... Depending on the answer to these questions, he could be dialyzed. Otherwise, he could go to hell. I’ve been mortally opposed to that. When I set up a dialysis center here with a grant from some government agency, I was forced to put in a life-and-death committee, but it never met.

By the way, the guys with very high grades are not necessarily the people that are the most successful in later life. They may be the ones that can regurgitate gracefully, and they get very high grades. But if the guys that have to work for it and do not have such good grades can do something extra, and prove that they can perform, they may have a chance.

In my early years it was undoubtedly my father. My father was director of a sanatorium for pulmonary tuberculosis, and at that time there were no antibiotics, tuberculosis was a terrible disease. And, he and I would walk in the woods around that sanatorium and he would discuss his worries about his patients. And from him, I certainly inherited this extreme concern about the well-being of patients. I’ve seen him very happy when he succeeded after months and months of rest and other things to have these people go home cured. I’ve also seen him crying and desperate after trying for a long time and a patient did not get well, and went home to die.

When I was this young assistant at the University of Groningen my responsibility was for four beds, or rather the patients in four beds. That was all I had to do. And, one of these patients was a young man, 22 years old, who slowly and miserably died from renal failure. He became blind, he vomited, and it was a miserable death. And I, as a very, very young physician, had to tell his mother, in a black dress and a little white cap like the farmers have, that her only son was going to die. I couldn’t do a damn thing about it. So, I began to think, “If I could just every day remove as much urea as this boy creates, which is about 20 grams, then the boy could live.” Well, he died, but I began to work on that.