Rhetorical Strategies In the speeches Fragment on Slavery, What to a Slave is the Fourth of July?, and The Southern Argument for Slavery, the authors all use rhetorical strategies ethos, pathos, and logos. In the speech Fragment on Slavery, Abraham Lincoln uses mostly logos because he uses logical words to turn the slave owners against themselves. Then in What to a Slave is the Fourth of July Frederick Douglas mainly uses pathos because he uses lots of emotion while talking about why slavery is wrong and why slavery needs to come to an end in the land of the free. Finally, The Southern Argument for Slavery mainly uses logos because he talks about why we need slaves to run this country's economic system and he also uses logical words on why