“Everyone's friend is his reason; his enemy is his ignorance.”
Ali al-Rida (770–818) eighth of the Twelve Imams
Muhammad Kulayni, Usūl al-Kāfī, vol.1, p. 11 ; Wasā'il al-Shī‘ah, vol.1, p. 161.
Regarding Knowledge & Wisdom, General
Book III, Ch. 26: The Wounded Faun
You Can't Go Home Again (1940)
“Everyone's friend is his reason; his enemy is his ignorance.”
Ali al-Rida (770–818) eighth of the Twelve Imams
Muhammad Kulayni, Usūl al-Kāfī, vol.1, p. 11 ; Wasā'il al-Shī‘ah, vol.1, p. 161.
Regarding Knowledge & Wisdom, General
“If the enemy of my enemy is my friend, then surely you should be friend to my friend.”
Holly Black book The Coldest Girl in Coldtown
Source: The Coldest Girl in Coldtown
Napoleon I of France (1769–1821) French general, First Consul and later Emperor of the French
Napoleon : In His Own Words (1916)
“He has no enemies, but is intensely disliked by his friends.”
Oscar Wilde (1854–1900) Irish writer and poet
“The knight of knowledge must be able not only to love his enemies, but also to hate his friends.”
Friedrich Nietzsche book Ecce homo
Der Mensch der Erkenntniss muss nicht nur seine Feinde lieben, er muss auch seine Freunde hassen können.
Foreword, in the Oscar Levy authorized translation.
Variant translations:
The man of knowledge must be able not only to love his enemies but also to hate his friends.
Ecce Homo (1888)
“The neurotic keeps minute track of his enemies; it is only his friends he is careless about.”
Mignon McLaughlin (1913–1983) American journalist
The Complete Neurotic's Notebook (1981), Neurotics and neurosis
“Trusting no man as his friend, he could not recognize his enemy when the latter actually appeared.”
Nathaniel Hawthorne book The Scarlet Letter
Source: The Scarlet Letter (1850), Chapter X: The Leech and His Patient
Pythagoras (-585–-495 BC) ancient Greek mathematician and philosopher
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
“Wisdom and intellect is every man's friend, ignorance and illiteracy are his enemies.”
Ali al-Rida (770–818) eighth of the Twelve Imams
Ibn Shu’ba al-Harrani, Tuhaf al-'Uqul, p. 467.
Regarding Knowledge & Wisdom, General
Tom Lehrer (1928) American singer-songwriter and mathematician
"Oedipus Rex"
An Evening (Wasted) With Tom Lehrer (1959)