In 2023, Reuel Khoza unsealed a letter to the future, which he had written in 1999 when he was chair of Eskom, at the time recognised as the best power utility in the world. It was an optimistic letter, expressing hopes that have since been dashed by corruption and maladministration - by a failure of ethical leadership. Khoza has written about leadership before - considering the importance of intelligence, emotional intelligence and social awareness. Now he broadens his focus to explore the role of spirituality - a 'faith quotient' - in transformational leadership. The Spirit of Leadership is about faith in humanity and, above all, faith in God. It is about being an African and a Christian, and a strong believer in the virtues of ubuntu, Africa's philosophy of humanness. It is about ancestral wisdom and modern leadership. It is about progress through ethical behaviour and good governance in business. Finally, it is about innovations of the spirit that are needed to save South Africa - and indeed the world - from a spiral of despair. This is a vital and timely book for a country that needs to rediscover its moral compass.