Frederick Douglass outlines the truth clearly and logically. He shows his readers that black people are intelligent and worthy humans, and depicts the terrible experiences of slaves in his writing. Many people in the North were uneducated about the real truth of slavery, and his work educated his audience about exactly what sort of horrible things were going on. He was also an excellent writer and speaker, and his work is very readable and engaging. He exposes the truth and his writing was able to get people angry and incensed about the horrors that were occurring, and drive them to action. Mr. Douglass was instrumental in the abolitionist (anti-slavery) movement, because he was a person who had experienced slavery first hand and could reflect and report on what was going on very eloquently and persuasively.