Answer: One cannot easily forget to love freedom; and it is as hard to cease to respect that natural love in our fellow creatures.
Step-by-step explanation:
You can get the excerpt online which I did. The sentence that best conveys the idea that it is not in the nature of men and women to be enslaved or to enslave others is that one cannot easily forget to love freedom; and it is as hard to cease to respect that natural love in our fellow creatures.
According to the excerpt, Frederick Douglass argued that slavery harms both master and slave and there's nothing as sweet as freedom.