"This is one of the most powerful books ever written about leadership."
"John's ability to identify and communicate the qualities of effective leadership is remarkable. After reading The Promises of Giants, your view of the world will most definitely improve."
"Amaechi is a towering force for good with a rare ability to defuse the most pungent provocations."
"Wise, challenging and inspiring, The Promises of Giants is a much-needed book that will resonate with you long after you have finished reading it."
"One of the most useful, enjoyable and challenging books on leadership of the last decade. An essential read for those aspiring to lead."