forewords by Robb Wolf and Bobby Soper forewords by Klay Hall and Bobs Gannaway forewords by Klay Hall and Bobs Gannaway. foreword by Brent Huffman and Colin Groves. foreword by Anderson Cooper foreword by Matt and Ross Duffer forewords by Cheong Liew and Ming Tsai ; forewords by Russ Tall Chief and Harvey Payne forewords by Adrian Cockcroft and Simon Wardley foreword by Anthony Robbins