People think he's really not gonna last much longer." By then, there'd also been conversations between Ralph and Feynman and me about this fascination they had with this country called Tanyutuva.

He was interested in visiting a far-off land called Tuva.

My name's Michelle Feynman.

I'm Richard Feynman's daughter.

He had collected stamps when he was a boy, and they had the most interesting shapes, you know, diamond and triangular, and the images on the stamps were like nothing he had seen, right? So this boy in New York is seeing yaks or whatever else was on these stamps, and it just painted a picture of an entirely different world.

So that sort of stuck in his head, and then many, many years later, he was at our dinner table with Ralph Leighton, and they were playing a geography game to sort of entertain and educate themselves or the children or something.

Eventually, Michelle Feynman and Ralph Leighton did make the trip.

So it was honestly, and maybe, maybe I'll put some of it on jet lag, but I was so emotional on this trip.

She is a primary keeper of her father's legacy and once edited a book of his letters.

I've read the letter that he sent to somebody from his fraternity, and he doesn't say...

It, it was sort of a recruitment-ish, like it wanted to be a recruitment letter, but there was so much that he couldn't say.

But if you sort of read between the lines, you could see his enthusiasm and his passion for the project.

It was sort of like, "I can't tell you why, but this thing is so important." That sort of speaks to his love of country and his patriotism.

I think he thought, you know, obviously, the, the Nazis were abhorrent and let's do everything we can to stop them.

Whether he thought, "I'm lucky to have been born on this side of the ocean," I don't know.

He was teaching at the University of California Berkeley.