With the death of Derrick Hass, the UK's creative community has lost a remarkable man who maintained a childlike enthusiasm for what he did well into his twilight years. So fertile was his mind that he would often paper the walls with his ads, inviting others to pick the best. As a mentor, he always gave generously of his time to young creatives. "I'm just a professional, and not an exceptional person," he once told Campaign. A lot of creative tyros would beg to differ.