Homegoing spans about 250 years of Ghanaian and American history. Some of this history I knew a bit about, but the novel did require an extensive amount of research, which was by far the most difficult part in the process of writing.

I've had some downturns in my career and various problems, but in fact all those kind of problems turned into something even better. It's kind of amazing, various times in my career.

I might have liked to have done it a couple of years later, but you'd be stupid to turn it down.

there was already an area of research, the autonomic nervous system, which was relatively neglected. It was between cardiology and neurology, and these areas in between are often the province of neither specialty, and so can lag behind. And that was the area I chose and this changed the second half of my life, if you like, because I then set up a laboratory.

Then at the time of retirement, that's a big problem in Sweden, as a retired person, because then you are pushed off. I was fortunate even from that point of view because I got a very good research collaboration agreement with Upjohn, the American Upjohn company. So that could help me to go on with my research.