Proslavery thought

To be proslavery is to support slavery. It is sometimes found in the thought of ancient philosophers, religious texts, and in American and British writings especially before the American Civil War, but also later through the 20th century.

In the Muslim world, slavery was traditionally sanctioned by religious scripture until the abolition of slavery in the 20th century, when new interpretations were made that prohibited slavery; however traditional interpretation were still argued by religious extremists in the 21st century.

Arguments in favor of slavery include deference to religious scripture, some people being natural slaves in need of supervision, slaves often being better off than the poorest non-slaves, practical social benefit for the society as a whole, and slavery being a time-proven practice by multiple great civilizations.