Which excerpt most accurately shows why Douglass wrote this narrative?

"In learning to read, I owe almost as much to the bitter opposition of my master, as to the kindly aid of my mistress. I acknowledge the benefit of both..."
"When I was sent of errands, I always took my book with me, and by going one part of my errand quickly, I found time to get a lesson before my return."
"'...if you teach that [slave] (speaking of myself) how to read, there would be no keeping him. It would forever unfit him to be a slave.'"
"This bread I used to bestow upon the hungry little urchins, who, in return, would give me that more valuable bread of knowledge."