I like the idea of women and men in movement. My fashion is not about being still. It's almost sporty, sometimes. I like the evolution of sports clothes. I think they are very interesting in the cut, in the fabrics.

I love this idea of being able to touch people with something quite familiar, something quite emotional, and at the same time, have the feeling that this is a new way of doing it, a fresh way of showing things. I like radical people. At the same time, I'm fascinated by popularity, people who were able to have huge success and also keep their consistency.

I think creating the clothes is about creating historical images - and that's about more than fashion. It is about the fashion, the photography, what you are doing in the moment. It's what we call in French rechercher, or the search for that thing. So even though fashion is not scientific, I think being a designer is somewhat like being a scientist.

Fashion is a playground up until a certain age. But then you have to find your own signature and your own style.

I believe there is a moment growing up when you build your own mood board. You do a collage - you collect a few things, a few images that will be so important for your future choices. Not only aesthetic, or what you like for dressing, but your artistic choices. The room where I put papers and pictures and posters on the walls when I was a kid, it's still very strong in my head today. This movie poster or that portrait of a girl I took from a magazine, deep inside, is inspiration that comes back all the time.

I'm always curious. Every day. As we get on in life, we must be grateful.

Why isn't Tilda Swinton on the covers of tons of magazines? Well, she's not that. It isn't her thing. But I don't know. I think that suddenly a time came when models, after the Linda Evangelista crowd, and Naomi Campbell and Christy Turlington, when the models for me became a bit bland. But I think more than that, the culture changed. The movies, television, music, and all of those things - those people were more visual and therefore more interesting.