“Perhaps it is impossible for a person who does no good not to do harm.”
Source: Uncle Tom's Cabin (1852), Ch. 28.
Help us to complete the source, original and additional information
Harriet Beecher Stowe 87
Abolitionist, author 1811–1896Related quotes

Source: Physics and Politics http://www.gutenberg.org/dirs/etext03/phypl10.txt (1869), Ch. 5
Context: I wish the art of benefiting men had kept pace with the art of destroying them; for though war has become slow, philanthropy has remained hasty. The most melancholy of human reflections, perhaps, is that, on the whole, it is a question whether the, benevolence of mankind does most good or harm. Great good, no doubt, philanthropy does, but then it also does great evil. It augments so much vice, it multiplies so much suffering, it brings to life such great populations to suffer and to be vicious, that it is open to argument whether it be or be not an evil to the world, and this is entirely because excellent people fancy that they can do much by rapid action — that they will most benefit the world when they most relieve their own feelings; that as soon as an evil is seen "something" ought to be done to stay and prevent it.
“My dignity asks him who does me no harm to do me no harm. Of him who harms me it asks nothing.”
Mi dignidad le pide a quien no me hace daño que no me haga daño, y a quien me hace daño no le pide nada.
Voces (1943)

“Every other knowledge is harmful to him who does not have knowledge of goodness.”
Book I, Ch. 25
Essais (1595), Book I
Source: The Complete Essays

“It's always the good men who do the most harm in the world.”
As quoted in American Heritage (December 1955), p. 44
Context: I disagree with my brother Charles and Theodore Roosevelt. I think that Lee should have been hanged. It was all the worse that he was a good man and a fine character and acted conscientiously. These facts have nothing to do with the case and should not have been allowed to interfere with just penalties. It's always the good men who do the most harm in the world.

“No people do so much harm as those who go about doing good.”
Quoted by Louise Creighton in Life and Letters of Mandell Creighton, vol. 2 http://books.google.com/books?id=XFrIeWud0_wC&q=%22no+people+do+so+much+harm+as+those+who+go+about+doing+good%22&pg=PA501#v=onepage. (1905)

“He harms himself who does harm to another, and the evil plan is most harmful to the planner.”
οἷ γ᾽ αὐτῷ κακὰ τεύχει ἀνὴρ ἄλλῳ κακὰ τεύχων
ἡ δὲ κακὴ βουλὴ τῷ βουλεύσαντι κακίστη.
The man who does evil to another does evil to himself, and the evil counsel is most evil for him who counsels it.
He for himself weaves woe who weaves for others woe,
and evil counsel recoils on the counsellor. https://archive.org/stream/b24865898#page/432/mode/2up
Source: Works and Days (c. 700 BC), lines 265-266