Very few designers can be talked about as revolutionaries who changed the course of contemporary fashion. Yohji Yamamoto is one. Fiercely independent, he still cherishes one thing above all else, fifty years after he graduated from fashion school: his absolute freedom. And freedom – fundamental to creativity – is a word we so rarely associate with fashion designers any more. Which is what makes Yohji-san the Master. Fellow designer Rick Owens interviews our cover star in Paris, with photographs by Juergen Teller.