As quoted in "Considerations By the Way" in Conduct of Life by Ralph Waldo Emerson
Variant translation: Believe me, a thousand friends suffice thee not; In a single enemy thou hast more than enough
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Abraham Lincoln 618
16th President of the United States 1809–1865Related quotes

As quoted in Diogenes Laërtius, Lives and Opinions of Eminent Philosophers, "Pythagoras", Sect. 23, as translated in Dictionary of Quotations http://archive.org/details/dictionaryquota02harbgoog (1906) by Thomas Benfield Harbottle, p. 320

Majlisi, Bihārul Anwār, vol.78, p. 128
General Quotes
“Don't be afraid of enemies who attack you. Be afraid of the friends who flatter you.”
Source: How to Win Friends and Influence People

“He will never have true friends who is afraid of making enemies.”
No. 401
Characteristics, in the manner of Rochefoucauld's Maxims (1823)
Source: Selected Essays, 1778-1830

Remark to editor William Alan White, as quoted in Thomas Harry Williams et al. (1959) A History of the United States.
1920s

“If the enemy of my enemy is my friend, then surely you should be friend to my friend.”
Source: The Coldest Girl in Coldtown