“Friendship often ends in love; but love in friendship—never.”
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.”
Vol. II; LXXXIII
Lacon
“Friendship often ends in love, but love in friendship - never.”
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)
“A friendship that like love is warm;
A love like friendship, steady.”
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
Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter XXXV
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.”
Reflections on Suicide (Réflexions sur le suicide, 1813), Section 1