‘Mzee’ is the Swahili word for an ‘old timer’, a respected elder. Mzee Ali Kalikilima was born near the present-day town of Tabora in western Tanzania, probably in the 1870s (there is mention of ‘The Doctor’—Dr David Livingstone) to black Muslim parents of noble birth. Aged 14, Mzee Ali led his first slaving safari to the shores of Lake Tanganyika and thence, with his caravan of captured slaves and ivory, through the malaria-, tsetse fly- and lion-infested wilds, to the Arab markets of Dar...