I had wanted to sculpt before, but the years at college had introduced so many new ideas, so many styles, so many materials that the millions of possibilities and legions of brilliant predecessors made me not only uncertain of how to proceed, but frozen in panic. Eventually I imposed a set of rules in order to cut down the avenues open to me. For instance, in one sculpture I ruled that the carving should only have convex forms. This revealed more possibilities that I would have imagined and where freedom had been overwhelming, the imposed restriction was liberating.