Watching movies of Bernardo Bertolucci I noticed that he gave the same idea to several protagonists. And in pursuit to find the origin I found out that the phrase actually assigned to two french poets:
“There is no love; there are only proofs of love.” ― Pierre Reverdy ( http://www.goodreads.com/quotes/734580-there-is-no-love-there-are-only-proofs-of-love )
“There's no such thing as love; only proof of love.” ― Jean Cocteau ( http://www.goodreads.com/quotes/205793-there-s-no-such-thing-as-love-only-proof-of-love )
- how does the phrase sound in french?
- is there one author or...?