What is the hardest thing that has happened to you, and what did you carry out of it?

The two alternatives left then to us were either to emigrate to the United States, or to pursue some activity that needed neither support nor connection with the outside Aryan world where we lived. My family chose this second alternative. I then decided to build a small research unit at home and installed it in my bedroom. My inspiration was a 1934 article by Viktor Hamburger reporting on the effects of limb extirpation in chick embryos. My project had barely started when Giuseppe Levi, who had escaped from Belgium invaded by Nazis, returned to Turin and joined me, thus becoming, to my great pride, my first and only assistant.

If you really want to make a difference, whether it’s in helping other people, or whether it’s in fighting for your country, or whether it’s in the political arena, or journalism, or physics, you’ve got to persevere. You’ve got to understand that there are going to be some enormous bumps in the road.

We received death threats, yes, but you see when you are in a struggle, there are going to have to be casualties, and why should you be exempt? But I often said, “Look, here, God, if I’m doing your work, then you jolly well are going to have to look after me!” And God did God’s stuff.

And into the darkness I said, “What happened?” and a woman’s voice said, “It was a car bomb,” and I collapsed into darkness again, but with a sense of euphoria. I’d survived.

Writing became a therapy. First of all, it meant I was reconstructing my own existence. It was also an act of defiance. I wasn’t supposed to write. ... I evolved all kinds of mental exercises, even went back to those subjects which I said I hated in school, in particular mathematics. ... You know, anything to keep the mind alive.

Look, life is pretty dreadful most of the time. Even in the country that's so pretty with the flowers and leaves and sunshine. And I was abandoned when he died! I'm alone. I feel like an old bubba. And I'm not kind all of the time, I'm not nice all the time.

One thing, it's too big a subject and I want to talk about it on paper if I talk about it at all. But I can say this much, because I thought the life that my father and mother would have had together was cut short and something of what they might have achieved I hope that I'm achieving in my work.

I unfortunately contracted tuberculosis at the age of sixteen and had to take a two-year break and receive treatment at home before I resumed my study at the private Ningbo Xiaoshi High School (1948–1950) and Ningbo High School (1950–1951). This experience led me to make a decision to choose medical research for my advanced education and career – if I could learn and have (medical) skills, I could not only keep myself healthy but also cure many other patients.

I moved to Argentina, then back to Tokyo and then to Anchorage, in Alaska, where I ran a restaurant. After 50 days the restaurant burnt down – an electrical fire. I lost my dream. I lost my money. I lost my passion. I thought about suicide, but thinking of my family and my kids made me realise I had to wake up.