It is difficult to imagine how someone could regret reading this book.
Here are a few select quotes from Twelve Years a Slave (1853) by Solomon Northup (b. 1808), who was kidnapped in 1841 and brought into slavery for twelve years prior to his legal liberation in 1853.
His psychologically influenced opinion of the character of one of masters:
“But I was sometime his slave, and had an opportunity of learning well his character and disposition, and it is but simple justice to him when I say, in my opinion, there never was a more kind, noble, candid, Christian man than William Ford. The influences and associations that had always surrounded him, blinded him to the inherent wrong at the bottom of the system of Slavery. He never doubted the moral right of one man holding another in subjection. Looking through the same medium with his fathers before him, he saw things in the same light. Brought up under other circumstances and influences, his notions would undoubtedly have been different. Nevertheless, he was a model master, walking uprightly, according to the light of his understanding, and fortunate was the slave who came to his possession. Were all men such as he, Slavery would be deprived of more than half its bitterness.” [p. 41]
A defense of his view by appealing to the psychological influences* affecting his master:
“It is not the fault of the slaveholder that he is cruel, so much as it is the fault of the system under which he lives. He cannot withstand the influence of habit and associations that surround him. Taught from earliest childhood, by all that he sees and hears, that the rod is for the slave’s back, he will not be apt to change his opinions in maturer years.” [p. 99]
“It is a fact I have more than once observed, that those who treated their slaves most leniently, were rewarded by the greatest amount of labor.” [p. 45]
No stealing from slaves on Sundays:
“It is the custom in Louisiana, as I presume it is in other slave States, to allow the slave to retain whatever compensation he may obtain for services performed on Sundays.” [p. 94]
It is noteworthy that this is not the case today, since people are forced to give income taxes to governments for money they earn on Sundays.
* Note that I link to Michael Huemer’s presentation The Psychology of Authority (also see Chapter 6 of his book The Problem of Political Authority for a more in-depth examination of the subject) twice intentionally, since the psychological factors Huemer describes that lead people to believe that governments have legitimate political authority are split in the case of slavery, such that some of those factors contribute to a slaveholder’s support of slavery (e.g. social proof, status quo bias, and political aesthetics), while others contribute to Solomon’s charitable view of the moral character of his master (e.g. Stockholm Syndrome and tendency to obey authority figures (see Milgram experiments) combined with cognitive dissonance).
I also highly recommend Frederick Douglass’ fantastic Narrative of the Life of Frederic Douglass, An American Slave. Both books are very emotional and captivating true stories. Additionally, I appreciate the valuable information I gained from them about history, psychology, and justice.