I take all my characters very seriously - the main, secondary, and supporting characters. Even if they only appear once, they still need to have their own life. Some characters are absent literally but at the same time very, very present.

I'm always reading, and you learn a lot by reading. When I was twenty-five, I read a lot, but didn't have much reading behind me.

I read a lot of poetry. All types of poetry, but mostly Catalan poetry, because I believe poetry is the essence of language. Reading the classics, be they medieval or contemporary, gives me a stylistic energy that I'm very interested in.

I think that's true of real life - we don't ever know anyone completely. Secrets are very important to creating a narrative work that's believable. The characters come into that world with secrets, as happens to all of us. As honest as we try to be in our relationships, we can never completely know someone. From a narrative perspective it's very important and pleasing - you want to have those secrets there. The secret is an essential part of the creation of the novel.

The essence of a novelist is to invent things and speak the truth, at the same time.

For someone like you who's a British citizen this might seem strange. How can you ban a language? It turns out that you can. During the dictatorship it was illegal to speak Catalan. This is an experience that we Catalans have all had to varying extents. Some more tense than others, but it's something we all share.

Along the way, about certain things, you realize, "I don't know anything about this." You think, "Is this going to sound ridiculous?" So I pestered more than a hundred different people over the course of the book. And when I finished the book I gave it to six or seven trusted readers, who are always the same, but I also gave it to a brother of mine who's a doctor and I asked him to read it, and he was very helpful. It's good to have a group of trusted readers. As my kids have grown up, they've joined this group.