“Friendship often ends in love; but love in friendship—never.”
Vol. II; LXXXIII
Lacon
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)
Car l'amitié est un amour mutuel, & s'il n'est mutuel, ce n'est pas amitié.
Introduction to the Devout Life (1609)
“Friendship often ends in love; but love in friendship—never.”
Vol. II; LXXXIII
Lacon
“Friendship often ends in love, but love in friendship - never.”
“A friendship that like love is warm;
A love like friendship, steady.”
How shall I woo?
Bartlett's Familiar Quotations, 10th ed. (1919)
“Friendship may, and often does, grow into love, but love never subsides into friendship.”
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).
107
Fruits of Solitude (1682), Part I
Source: Anam Cara: A Book of Celtic Wisdom