“Friendship often ends in love; but love in friendship—never.”
Charles Caleb Colton (1777–1832) British priest and writer
Vol. II; LXXXIII
Lacon
Quoted by Marguerite Gardiner, Countess of Blessington in Conversations of Lord Byron with the Countess of Blessington http://books.google.com/books?id=w648AAAAYAAJ&q="Friendship+may+and+often+does+grow+into+love+but+love+never+subsides+into+friendship"&pg=PA179#v=onepage (1834).
“Friendship often ends in love; but love in friendship—never.”
Charles Caleb Colton (1777–1832) British priest and writer
Vol. II; LXXXIII
Lacon
“Friendship often ends in love, but love in friendship - never.”
Albert Camus (1913–1960) French author and journalist
François de La Rochefoucauld book Reflections; or Sentences and Moral Maxims
Dans l'amitié comme dans l'amour on est souvent plus heureux par les choses qu'on ignore que par celles que l'on sait.
Variant translation: In friendship as in love, we are often happier due to the things we are unaware of than the things we know.
Maxim 441.
Reflections; or Sentences and Moral Maxims (1665–1678)
Elie Wiesel (1928–2016) writer, professor, political activist, Nobel Laureate, and Holocaust survivor
“A friendship that like love is warm;
A love like friendship, steady.”
Thomas Moore (1779–1852) Irish poet, singer and songwriter
How shall I woo?
Bartlett's Familiar Quotations, 10th ed. (1919)
“Friendship is always helpful, but love sometimes even does harm”
Amicitia semper prodest, amor aliquando etiam nocet
Seneca the Younger (-4–65 BC) Roman Stoic philosopher, statesman, and dramatist
Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter XXXV
Francis de Sales book Introduction to the Devout Life
http://books.google.com/books?id=d8kCAAAAQAAJ&q=%22Because+friendship+is+intercommunication+of+love+therefore+where+love+is+not+mutual+there+can+be+no+friendship%22&pg=PA145#v=onepage
Car l'amitié est un amour mutuel, & s'il n'est mutuel, ce n'est pas amitié.
http://books.google.com/books?id=orIOAAAAQAAJ&q=%22car+l'amiti%C3%A9+est+un+amour+mutuel+%26+s'il+n'est+mutuel+ce+n'est+pas+amiti%C3%A9%22&pg=PA242#v=onepage
Pt. 3, ch. 17
Introduction to the Devout Life (1609)
“Life often seems like a long shipwreck, of which the débris are friendship, fame, and love.”
Anne Louise Germaine de Staël (1766–1817) Swiss author
Reflections on Suicide (Réflexions sur le suicide, 1813), Section 1