There are quite a few which are all my favourite , for example :-
1. " If you have it ( Love), you don't need to have anything else and if you don't have it, it doesn't matter much what else you have. "
2. " Love is a promise, love is a souvenir, once given never forgotten, never let it disappear."
3. " All love that has not friendship for its base is like a mansion built upon the sand."