Slavery is a historical essay work by prominent American preacher and abolitionist William Ellery Channing that influenced the anti-slavery movement. In his book, the author not only condemns slavery as a social phenomenon and a moral catastrophe, but also tries to understand its causes and consequences. Channing emphasizes the importance of humanitarian values, focusing on human dignity and human rights. This book became an important step in the struggle for the liberation of slaves and influenced public awareness of the need to end slavery.