Romantic quotes

Variant: Whatever our souls are made of, his and mine are the same
Source: Wuthering Heights

'Where Do We Go From Here?" as published in Where Do We Go from Here : Chaos or Community? (1967), p. 62; many statements in this book, or slight variants of them, were also part of his address Where Do We Go From Here?" which has a section below. A common variant appearing at least as early as 1968 has "Returning violence for violence multiplies violence..." An early version of the speech as published in A Martin Luther King Treasury (1964), p. 173, has : "Returning hate for hate multiplies hate..."
1960s
Source: A Testament of Hope: The Essential Writings and Speeches
Context: The ultimate weakness of violence is that it is a descending spiral, begetting the very thing it seeks to destroy. Instead of diminishing evil, it multiplies it. Through violence you may murder the liar, but you cannot murder the lie, nor establish the truth. Through violence you may murder the hater, but you do not murder hate. In fact, violence merely increases hate. So it goes. … Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that.

Variant: Everyone wants to ride with you in the limo, but what you want is someone who will take the bus with you when the limo breaks down.

"In Search of a Majority: An Address" (Feb 1960); reprinted in Baldwin, "Nobody Knows My Name: More Notes of a Native Son" https://en.wikipedia.org/wiki/Nobody_Knows_My_Name (1961)

Variant: You know you're in love when you can't fall asleep because reality is finally better than your dreams.

Variant: It's one thing to fall in love. It's another to feel someone else fall in love with you, and to feel a responsibility toward that love.
Source: Every Day

Source: Northanger Abbey

Variant: You want my opinion? We're all a little weird. And life is a little weird. And when we find someone whose weirdness is compatible with ours, we join up with them and fall into mutually satisfying weirdness — and call it love — true love.
Source: True Love (1998)

1979

Variant: Kiss me and you will see how important I am.
Source: The Unabridged Journals of Sylvia Plath

Variant: Life is not the breaths you take but the moments that take your breath away.

frequently attributed to Lennon, but entirely unsourced
Disputed

"Jubal Harshaw" in the first edition (1961); the later 1991 "Uncut" edition didn't have this line, because it was one Heinlein had added when he went through and trimmed the originally submitted manuscript on which the "Uncut" edition is based. Heinlein also later used a variant of this in The Cat Who Walks Through Walls where he has Xia quote Harshaw: "Dr. Harshaw says that 'the word "love" designates a subjective condition in which the welfare and happiness of another person are essential to one's own happiness.'"
Source: Stranger in a Strange Land (1961; 1991)

Source: No Exit

The Prophet (1923)

Source: The Notebook

Variant: You never lose by loving. You always lose by holding back.
Source: Chicken Soup for the Couple's Soul

Variant: Love involves a peculiar unfathomable combination of understanding and misunderstanding.

Source: Frostbite

Variant: Doubt thou the stars are fire
Doubt thou the sun doth move
Doubt truth to be a liar
But never doubt I love
Source: Hamlet

Source: The Alchemist

Attributed to Irving as early as 1883. [Hit and miss : a story of real life, Angie Stewart, Manly, Chicago, J.L. Regan, 1883, i, http://hdl.handle.net/2027/osu.32435018229575?urlappend=%3Bseq=7] However, it does not seem to appear in Irving's known works. Other citations from the same year leave the quotation unattributed. [Henry S. (ed.), Clubb, The Peacemaker and Court of Arbitration, Volume 1, Universal Peace Union, 1883, 125, Philadelphia, https://books.google.com/books?id=Uu84AQAAMAAJ&pg=PA125] [The Australian Women's Magazine and Domestic Journal, Vol. 2 No. 2 (May 1883), 1883, Melbourne, 435, https://books.google.com/books?id=mq0sAQAAMAAJ&pg=PA435]. A similar passage is found in a pseudonymous novel published two years earlier in 1881: "Julia knew that sacrifices to patience are not in vain. Although they often do not produce the happiness for which they are made, they will, always, flow back and soften and purify the heart of the one who makes them". [Illma, Or, Which was Wife?, Miss, M.L.A., Cornwell & Johnson, 1881, 239, New York, http://hdl.handle.net/2027/osu.32435017658592?urlappend=%3Bseq=245]
Disputed

Variant: Come to finish me off, Sweetheart?
Source: The Hunger Games

Source: Clockwork Princess

Variant: I love you as one loves certain dark things, secretly, between the shadow and the soul.
Source: 100 Love Sonnets

Source: Lolita

Source: What is Surrealism?: Selected Writings

Source: Jazz

Source: The Notebook

Source: Eat, pray, love: one woman's search for everything

Source: Romeo and Juliet

Frequently misattributed to Marilyn Monroe or Kurt Cobain.
Source: https://books.google.com/books?id=xUtdDnEhkMMC&pg=PT12&lpg=PT12#v=onepage&q&f=false
Source: Autumn Leaves, Philosophical eLibrary, 2012, (Feuillets d'automne, 1941, trans. Jeanine Parisier Plottel)

Source: The Notebook

As quoted in a review of A Swinger of Birches (1957) by Sydney Cox in Vermont History, Vol. 25 (1957), p. 355
1950s

The Bell (1958), ch. 19; 2001, p. 219.

Interview, Hollywood Reporter (1954)

Source: "The Unknown", line 16, cited from Collected Poems (London: Selwyn & Blount, 1920), p. 116.

Source: When You Come to a Fork in the Road, Take It!: Inspiration and Wisdom from One of Baseball's Greatest Heroes

"Hyla Brook" (1920)
1920s

Source: City of Glass

"Helen and Teacher: The Story of Helen Keller and Anne Sullivan Macy", Joseph P. Lash (1980) http://quoteinvestigator.com/2014/04/21/together/

Source: Me: Stories of My Life

Variant: You are braver than you believe,
Stronger than you seem,
And smarter than you think(:
Source: Winnie-the-Pooh

Source: A Testament of Hope: The Essential Writings and Speeches

Source: Committed: A Skeptic Makes Peace with Marriage

The Fall (1956)

Without Love
Music, Slippery When Wet (1986)

"The Light" (Track 7)
Albums, Like Water for Chocolate (2000)

"Nature Boy" (1948)
The greatest thing you'll ever learn is to love and be loved, just to love and be loved.
His assertion to Joe Romersa, of how his lyrics should be corrected, saying that "To be loved in return, is too much of a deal, and that has nothing to do with love."
Context: While we spoke of many things
Fools and kings
This he said to me:
"The greatest thing you'll ever learn
Is just to love and be loved in return."

Source: supanet.com/find/famous-quotes-by/axel-munthe/a-man-can-stand-a-lot-as-fqb50991/

Source: The Brothers Karamazov (Bratři Karamazovi)

Variant: If we'd never met, I think I would have known my life wasn't complete. And I would have wandered the world in search of you, even if I didn't know who I was looking for.
Source: The Longest Ride

Source: Wasted: A Memoir of Anorexia and Bulimia

Source: The Giver

Orsino, Act I, scene i.
Variant: Music, moody food
Of us that trade in love.
Source: Twelfth Night (1601)

Source: Family Matters

No. LXIII
Sonnets from the Portuguese (1850)
Variant: How do I love thee? Let me count the ways.
I love thee to the depth and breadth and height
My soul can reach
Context: How do I love thee? Let me count the ways.
I love thee to the depth and breadth and height
My soul can reach, when feeling out of sight
For the ends of Being and ideal Grace.
Context: How do I love thee? Let me count the ways.
I love thee to the depth and breadth and height
My soul can reach, when feeling out of sight
For the ends of Being and ideal Grace.
I love thee to the level of everyday's
Most quiet need, by sun and candlelight.
I love thee freely, as men strive for Right;
I love thee purely, as they turn from Praise.
I love thee with the passion put to use
In my old griefs, and with my childhood's faith.
I love thee with a love I seemed to lose
With my lost saints,—I love thee with the breath,
Smiles, tears, of all my life! —and, if God choose,
I shall but love thee better after death.

"The End"; The last full song track of Abbey Road (1969) the last Beatles album to be recorded before the band broke up. (Let It Be was the last album released, but had been recorded earlier.)
Lyrics, The Beatles
Source: The Beatles Illustrated Lyrics

Source: Pride and Prejudice

Mildred Pierce

"being to timelessness as it's to time" (1958)

Variant: In vain I have struggled. It will not do. My feelings will no longer be repressed. You must allow me to tell you how ardently I admire and love you.
Source: Pride And Prejudice

Variant: To love or have loved is all-sufficing. We must not ask for more. No other pearl is to be found in the shadowfolds of life. To love is an accomplishment.
Source: Les Misérables

Source: Lord Arthur Savile's Crime and Other Stories

Source: The Wise Man's Fear

Source: The Wise Man's Fear (2011)
Context: We love what we love. Reason does not enter into it. In many ways, unwise love is the truest love. Anyone can love a thing because. That's as easy as putting a penny in your pocket. But to love something despite. To know the flaws and love them too. That is rare and pure and perfect.

Gwendolen, Act III.
The Importance of Being Earnest (1895)
Variant: If you are not too long, I will wait here for you all my life.

Variant: Though lovers be lost love shall not.