According to Harriet, slavery is a curse to?

According to Harriet, slavery is a curse to both the slaves and the slave owners.

I was twenty-one years in that cage of obscene birds. I can testify, from my own experience and observation, that slavery is a curse to the whites as well as to the blacks. It makes the white fathers cruel and sensual; the sons violent and licentious; it contaminates the daughters, and makes the wives wretched. And as for the colored race, it needs an abler pen than mine to describe the extremity of their sufferings, the depth of their degradation.