One original thing in the Sisterhood of the Traveling Pants books is that Ann Brashares chose to separate every of her chapters with a quote, instead of the regular chapter numeration. Here you can find every quote used in the books.

The Sisterhood of the Traveling Pants:

"Not all who wander are lost." - J.R.R. Tolkien
"Luck never gives: it only lends." - Ancient Chinese proverb
"Today is the tomorrow we worried about yesterday." - Anonymous
"Can you make yourself love? Can you make yourself be loved?" - Lena Kaligaris
"There is no such thing as fun for the whole family." - Jerry Seinfeld
"Love is like war: easy to begin, hard to end." - Proverb
"Rule #1: The customer is always right. Rule #2: If the customer is wrong, please refer to rule #1" - Duncan Howe
"When life hands you a lemon, say "Oh yeah, I like lemons. What else ya got?" - Henry Rollins
"I have seen the future and it's like the present, only longer." - Dan Quisenberry
"Sometimes you're the windshield; sometimes you're the bug." - Mark Knopfler
"If you feel like you're under control, you're just not going fast enough." - Mario Andretti
"The problem is not the problem. The problem is your attitude about the problem. Got that?" - Coach Brevin
"If you don't find it in the index, look very carefully throughout the entire catalog." - Sears Roebuck catalog
"Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you are a mile away from them, and you have their shoes." - Frieda Norris
"Time tells the truth." - Fortune cookie
"Of the thirty-six ways of avoiding disaster, running away is best." - Anonymous
"Life is so... whatever." - Kelly Marquette, aka Skeletor
"You will make all kinds of mistakes; but as long as you are generous and true and also fierce you cannot hurt the world or even seriously distress her." - Winston Churchill.
"Wish for what you want. Work for what you need." - Carmen's grandmother
"My karma ran over my dogma." - Bumper sticker
"You can take a road that gets you to the stars. I can take a road that will see me through." - Nick Drake
"What you do speaks so loudly that I cannot hear what you say." - Ralph Waldo Emerson
"All Moanday, Tearday, Wailsday, Thumpsday, Frightday, Shatterday." - James Joyce
"Is there world enough for me?" - Jane Frances
"In your eyes I am complete." - Peter Gabriel
"We will go. Nowhere we know. We don't have to talk at all." - Beck

The Second Summer of the Sisterhood:

"Nothing is too wonderful to be true." - Michael Faraday
"Oh who can tell, save he whose heart hath tried." - Lord Byron
"There is nothing like returning to a place that remains unchanged to find the ways in which you yourself have altered." - Nelson Mandela
"I've had a perfectly wonderful evening, but this wasn't it." - Groucho Marx
"On the other hand, you have different fingers." - Jack Handey
"Men occasionaly stumble over the truth, but most of them pick themselves up and hurry off as if nothing had happened." - Winston Churchill
"... You can see only as far as your headlights, but you can make the whole trip that way." - E.L. Doctoron
"Lovers alone wear sunlight." - E.E. Cummings
"Life isn't fair. It's just fairer than death, that's all." - William Goldman
"Some things have to be believed to be seen." - Ralph Hodgson
"Time is what keeps things from happening all at once." - Graffiti
"Sometimes you need to make a mess." - Loretta, the Rollinses' housekeeper
"Fear is that little darkroom where negatives are developed." - Michael Pritchard
"The centaurs were invited too, for though wild and lawless they were nonetheless distant relatives." - D'Aulaires's Book of Greek Myths
"If you scatter thorns, don't go barefoot." - Italian proverb.
"Please give me a second grace." - Nick Drake
"Power corrupts. Absolute power is kind of neat." - John Lehman
"Nothing takes the taste out of peanut butter quite like unrequited love. " - Charlie Brow
"There are two tragedies in life. One is not to get your heart's desire. The other is to get it." - George Bernard Shaw
"What is that you express in your eyes? It seems to me more than all the words I have read in my life." - Walt Whitman
"He made the world to be a grassy road. Before her wandering feet." - W.B. Yeats
"There is no remedy for love but to love more." - Henry David Thoreau
"A pigeon is the same thing as a dove. Did you know that?" - Bridget Vreeland
"Pools of sorrow, Waves of joy." - John Lennon & Paul McCartney
"Let me feel now what sharp distress I may" - Charles Dickens
"Love is a snowmobile racing across the tundra and then suddenly it flips over. Pinning you underneath. At night, the ice weasels come." - Matt Groening
"We are born not once, but again and again." - William Charles
"Let the golden age begin." - Beck

Girls in Pants:

"In summer, the song sings itself." - William Carlos Williams
"Afterwards, the universe will explode for your pleasure." - Douglas Adams
"Somebody already broke my heart." - Sade
"Where there is great love, there are always miracles." - Willa Cather
"Someday somebody's going to ask you a question that you should say yes to." - Old 97's
"I don't have to be careful, I've got a gun!" - Homer Simpson
"Your chances of getting hit by lightning go up if you stand under a tree, shake your fist at the sky, and say "storms suck!"" - Johnny Carson
"It's like, how much more black could this be? And the answer is none. None more black." - This Is Spinal Tap
"There are many things that we would throw away if we were not afraid that others might pick them up." - Oscar Wilde
"Aerodynamically, the bumblebee shouldn't be able to fly, but the bumblebee doesn't know it so it goes on flying anyway." - Mary Kay Ash
"Hit the point once. Then come back and hit it again. Then hit it a third time- a tremendous whack." - Winston Churchill
Patrick: I'm mad. Sponge bob: What's the matter, Patrick? Patrick: I can't see my forehead.
"God is subtle. But not malicious." - Albert Einstein
"Can I buy you a drink, or should I just give you the money?" - Failed pickup artist
"Show me a girl with her feet planted firmly on the ground and I'll show you a girl who can't put her pants on." - Annik Marchand
"Heard melodies are sweet, but those unheard are sweeter: therefore, ye soft pipes, play on." - John Keats
"Should we have stayed home and thought of here?" - Elizabeth Bishop
"It's the same old story. Boy finds girl, boy loses girl, girl finds boy, boy forgets girl, boy remembers girl, girl dies in a tragic blimp accident over the Orange Bowl on New Year's Day." - The Naked Gun
"Don't ask me any questions right now. I'm grumpy and I'll probably make fun of you." - Effie Kaligaris
"To the man who only has a hammer in the toolkit, every problem looks like a nail." - Abrahal Maslow
"Jiggle it a little it'll it open." - Pinky & the Brain via Roger Miller
"There was a law of life, so cruel and so just, that one must grow or else pay more for remaining the same." - Norman Mailer
"This "telephone" has too many shortcomings to be seriously considered as a means of communication. The device is inherently of no value to us." - Western Union internal memo, 1876.
"Of course she found it in the last place she looked. If she hadn't found it, she'd still be looking." - Susannah Brown.
"We are born believing. A man bears beliefs, as a tree bears apples." - Ralph Waldo Emerson
"To love another person if to see the face of God." - Victor Hugo
"My shoe is off. My foot is cold. I have a bird. I like to hold." - Dr. Seuss
"I just need your star for a day." - Nick Drake
"I have immortal longings in me." - William Shakespeare
"I have tried my way to be free." - Leonard Cohen
"Following the light of the sun, we left the Old World." - Christophe Colomb
"I'm going back to the start." - Coldplay

Forever in Blue:

"And see she flies and she is everywhere." - Nick Drake
"The only true paradise is paradise lost." - Marcel Proust
"One's real life is so often the life that one does not lead." - Oscar Wilde
"... and down they forgot as up they grew." - E.E. Cumming
"Fill what is empty, empty what is full, and scratch where it itches." - Tallulah Bankhead
"Oh, life is a glorious cycle of song / A medley of extemporanea / And love is a thing that can never go wrong / And I am Marie of Roumania." - Dorothy Parker
"Pain is inevitable; suffering is optional." - Greta Rodolph
"It's innoncence when it charms us, ignorance when it doesn't." - Mignon McLaughin
"Right now I'm having amnesia and déjà vu at the same time. I think I've forgotten the before." - Steven Wright
"Do not spoil what you have by desiring what you have not." - Epicurus
"Always carry a flagon of whiskey in case of snakebite, and furthermore, always carry a small snake." - W.C. Fields
"It is a characteristic of wisdom not to do desperate things." - Henry David Thoreau
"A single day is enough to make us a little larger." - Paul Klee
"In the depth of winter, I finally learned that within me there lay an invincible summer." - Albert Camus
"One must have a good memory to keep promises one has made." - Friedrich Nietzsche
"And if the blind lead the blind, both shall fall into the ditch." - Matthew 15:14
"Experience is a hard teacher because she gives the test first, the lesson afterward." - Vernon Law
"Oh darling, let your body in, let it tie you in, in comfort." - Anne Sexton
"I have drunk, and seen the spider." - William Shakespeare
"A child of five would understand this. Send someone to fetch a child of five." - Groucho Marx
"Why, what could she have done, being what she is? Was there another Troy for her to burn?" - William Butler Yeats
"You shall know the truth and the truth shall make you mad." - Aldous Huxley
"Illusions are art, for the feeling person, and it is by art that you live, if you do." - Elizabeth Bowen
"She cannot fade, though thou hast not thy bliss. For ever wilt thou love and she be fair!" - John Keats
"Remember to let her into your heart." - John Lennon & Paul McCartney
"Bouncing is for balls." - Tibby Rollins
"And maybe... you are a little fat bear cub with no wings and no feathers. " - Else Holmelund Minarik
"Life's a voyage that's homeward bound." - Herman Melville
"Crazy is what crazy do." - The Black Eyed Peas
"Poor empty pants with nobody inside them." - Dr Seuss
"At first cock-crow the ghosts must go back to their quiet graves below. " - Theodorisia Garrison
"Off we go, into the wild blue yonder." - US Air Force anthem
"You are welcome here." - B, C, L and T