Question - what is his (frederick douglass) hope, and why does he have the hope? story - narrative of the life of frederick douglass required - textual evidence

Ah, classic Frederick Douglass.

On the story "Narrative of the Life of Frederick Douglass", which I read last year, it explains the misery of slavery and how tough it was for him to escape slavery. He questions the ethics of slavery, and why it's immoral to hold people property over other people, when the Declaration of Independence said that "Everybody is equal". On the text, you will see that he secretly taught himself to read and write, just to spread his messages.
Frederick Douglass, as an abolitionist, hoped that one day, slavery would end. Why does he have this hope? Well, there is no debate to slavery. SLAVERY IS IMMORAL.