“We have only love,
to offer as a prayer,
for all the wrongs in the world.
So… like singing troubadours we’ll go,
singing love wherever we go.”

Silent Sunlight
Song lyrics, Catch Bull at Four (1972)

While I listen to thy Voice; reported in Bartlett's Familiar Quotations, 10th ed. (1919).

"On Being in Love".
Idle Thoughts of an Idle Fellow (1886)
Context: Love is like the measles; we all have to go through it. Also like the measles, we take it only once... No, we never sicken with love twice. Cupid spends no second arrow on the same heart.

Book IX, line 64
Eclogues (37 BC)

Rolling Stone interview (2005)
Context: I was in my room listening on headphones on a tape recorder. It's very intimate. It's like talking to somebody on the phone, like talking to John Lennon on the phone. I'm not exaggerating to say that. This music changed the shape of the room. It changed the shape of the world outside the room; the way you looked out the window and what you were looking at.
I remember John singing "Oh My Love." It's like a little hymn. It's certainly a prayer of some kind — even if he was an atheist. "Oh, my love/For the first time in my life/My eyes can see/I see the wind/Oh, I see the trees/Everything is clear in our world." For me it was like he was talking about the veil lifting off, the scales falling from the eyes. Seeing out the window with a new clarity that love brings you. I remember that feeling.
Yoko came up to me when I was in my twenties, and she put her hand on me and she said, "You are John's son." What an amazing compliment!

Upside Down.
Song lyrics, Sing-A-Longs and Lullabies for the Film Curious George (2006)