The biography presents the subject's upbringing, personal convictions, and public career, focusing on his persistent campaign against slavery. It interleaves biographical narrative with broader historical background on slavery's origins and abuses and critiques of theological and social justifications for the practice. Passages describe moral struggles, public advocacy, parliamentary efforts, and alliances with fellow reformers, while highlighting Christian ethics as a motivating force. Closing sections consider the human cost of slavery and the gradual legal and social changes won through sustained moral and political pressure.