And to Think That I Saw It on Mulberry Street (1937)

• And that is a story that no one can beat,
  When I say that I saw it on Mulberry Street.

Horton Hatches the Egg (1940)

• I meant what I said,
  and I said what I meant
  An elephant's faithful,
  One hundred percent.

Horton Hears a Who! (1954)

Don't give up! I believe in you all
A person's a person, no matter how small!

• On the 15th of May, in the Jungle of Nool,
  In the heat of the day, in the cool of the pool,
  He was splashing... enjoying the jungle's great joys...
  When Horton the elephant heard a small noise.

• A person's a person, no matter how small.

• "My friends!", cried the elephant.
  "Tell me! Do tell!
  Are you safe? Are you sound?
  Are you whole? Are you well?"

• "You're going to be roped!
  And you're going to be caged!
  And, as for your dust speck – hah!
  That we shall boil in a hot steaming kettle of Beezle-Nut Oil!"

• "Don't give up! I believe in you all.
  A person's a person, no matter how small!
  And you very small persons will not have to die
  If you make yourselves heard! So come on, now, and TRY!"

• "This", cried the Mayor, "is your town's darkest hour!
  The time for all Whos who have blood that is red
  To come to the aid of their country!", he said.
  "We've GOT to make noises in greater amounts!
  So, open your mouth, lad! For every voice counts!"

On Beyond Zebra! (1955)

So, on beyond Z!
It's high time you were shown
That you really don't know
All there is to be known.

• Oh the things you can find
  If you don't stay behind!

• In the places I go there are things that I see
  That I never could spell if I stopped with the Z.
  I'm telling you this 'cause you're one of my friends.
  My alphabet starts where your alphabet ends!

• So, on beyond Z!
  It's high time you were shown
  That you really don't know
  All there is to be known.

The Cat in the Hat (1957)

We looked! And we saw him!
The Cat in the Hat!

• The sun did not shine.
  It was too wet to play.
  So we sat in the house
  All that cold, cold, wet day.

• We looked! Then we saw him
  Step in on the mat!
  We looked! And we saw him!
  The Cat in the Hat!

How the Grinch Stole Christmas! (1957)

• "Maybe Christmas...", he thought, "...Doesn't come from a store."
  "Maybe Christmas... perhaps... means a little bit more!"

• Well, in Who-ville they say
  That the Grinch's small heart
  Grew 3 sizes that day.

Yertle the Turtle (1958)

• And today the great Yertle, that Marvelous he,
  Is King of the Mud. That is all he can see.
  And the turtles, of course... all the turtles are free
  As turtles and, maybe, all creatures should be.

• I know up on top you are seeing great sights,
  But down here on the bottom,
  We too should have rights.

One Fish Two Fish Red Fish Blue Fish (1960)

• From there to here,
  from here to there,
  funny things are everywhere.

• If you never did
  You should.
  These things are fun.
  and Fun is good.'

Green Eggs and Ham (1960)

• I am Sam.
  Sam-I-Am.

• That Sam-I-Am!
  That Sam-I-Am!
  I do not like that Sam-I-Am!

• I would not like them here or there.
  I would not like them anywhere.
  I do not like green eggs and ham.
  I do not like them, Sam-I-Am.

• Say!
  I like green eggs and ham!
  I do! I like them, Sam-I-Am!

I Had Trouble in Getting to Solla Sollew (1965)

• I pulled, pulled, and pulled. And the next thing I knew,
  I was pulling the camel and Wubble-Chap too!
  "Now really," I thought, "this is rather unfair!"
  But he said, "Don't you stew. I am doing my share.
  "This is called teamwork. I furnish the brains.
  You furnish the muscles, the aches and the pains.
  I'll pick the best roads, tell you just where to go,
  And we'll find a good doctor more quickly, you know."
  Then he sat and he worked with his brains and his tongue
  And he bossed me around just because I was young.
  He told me go left. Then he told me go right.
  And that's what he told me all day and all night.

• A big man on a horse scared me out of my wits.
  He bellowed, "I'm General Genghis Kahn Schmitz.
  There's a war going on! And it's time that you knew
  Every lad in this land has his duty to do.
  We're marching to battle. We need you, my boy!
  We're about to attack. We're about to destroy
  The Perilous Poozer of Pompelmoose Pass!
  So get into line. You're a Private, First Class."

• I'd have no more troubles...
  That's what the man said.
  
  So I started to go.
  But I didn't.
  Instead ....
  I did some quick thinking
  Inside of my head.
  
  Then I started back home
  To the Valley of Vung.
  I know I'll have troubles.
  I'll maybe get stung.
  I'll always have troubles.
  I'll maybe get bit
  By that Green-Headed Quail
  On the place where I sit.
  
  But I've bought a big bat.
  I'm all ready, you see.
  Now my troubles are going
  To have troubles with me!

The Lorax (1972)

I am the Lorax. I speak for the trees.

UNLESS someone like you cares a whole awful lot,
nothing is going to get better. It's not.

• "Mister!" he said with a sawdusty sneeze.
  "I am the Lorax. I speak for the trees.
  I speak for the trees, for the trees have no tongues.
  And I'm asking you, sir, at the top of my lungs" –
  He was very upset as he shouted and puffed –
  "What's that THING you've made out of my Truffula tuft?"

• I am the Lorax who speaks for the trees,
  Which you seem to be chopping as fast as you please!
  But I'm also in charge of the brown Bar-ba-loots,
  Who played in the shade in their Bar-ba-loot suits,
  And happily lived, eating Truffula fruits.
  Now, thanks to your hacking my trees to the ground,
  There's not enough Truffula fruit to go 'round!
  And my poor Bar-ba-loots are all getting the crummies
  Because they have gas, and no food, in their tummies!

• UNLESS someone like you
  cares a whole awful lot,
  nothing is going to get better.
  It's not.

• "So . . .
  Catch!" calls the Once-ler.
  He lets something fall.
  "It's a Truffula Seed.
  It's the last one of all!
  You're in charge of the last of the Truffula Seeds.
  And Truffula Trees are what everyone needs.
  Plant a new Truffula. Treat it with care.
  Give it clean water. And feed it fresh air.
  Grow a forest. Protect it from axes that hack.
  Then the Lorax
  and all of his friends
  may come back."

• Now all that was left 'neath the bad-smelling sky
  was my big empty factory...
  the Lorax...
  and I.
  The Lorax said nothing.
  Just gave me a glance,
  just gave me a very sad, sad backward glance,
  as he lifted himself by the seat of his pants.
  And I'll never forget the grim look on his face
  when he heisted himself and took leave of this place,
  through a hole in the smog, without leaving a trace.
  And all that the Lorax left here in this mess
  was a small pile of rocks with the one word:
  UNLESS.
  Whatever that meant . . . well, I just couldn't guess.

Did I Ever Tell You How Lucky You Are? (1973)

• It’s a troublesome world. All the people who're in it
  are troubled with troubles almost every minute.
  You oughta be thankful, a whole heaping lot,
  For the places and people you're lucky you're not!
  • The last sentence of this statement is often misquoted as "You oughta be thankful, a whole heaping lot, / For the people and places you're lucky you're not!'"

• And suppose that you lived in that forest in France
  Where the average young person just hasn't a chance
  To escape from the perilous pants-eating plants!
  But your pants are safe! You're a fortunate guy.
  And you ought to be shouting, "How lucky am I!"

• Thank goodness for all the things you are not!
  Thank goodness you're not something someone forgot,
  and left all alone in some punkerish place
  like a rusty tin coat hanger hanging in space.

• That's why I say, "Duckie!
  Don’t grumble! Don’t stew!
  Some critters are much-much,
  oh, ever so much-much,
  so muchly much-much more unlucky than you!"

I Can Read With My Eyes Shut! (1978)

• The more that you read,
  The more things you will know.
  The more that you learn,
  The more places you’ll go.

• Young cat! If you keep
  Your eyes open enough,
  Oh, the stuff you will learn!
  The most wonderful stuff!

• you'll miss the best things if you keep your eyes shut

Oh, the Places You'll Go! (1990)

When things start to happen, don't worry, don't stew.
Just go right along, you'll start happening too!

• You have brains in your head.
  You have feet in your shoes.
  You can steer yourself
  any direction you choose.

• With your head full of brains,
  and your shoes full of feet,
  You're too smart to go down any not-so-good-street.

• Out there things can happen, and frequently do,
  To people as brainy and footsy as you.
  And when things start to happen, don't worry, don't stew.
  Just go right along, you'll start happening too!

• You're off to great places. Today is your day! Your mountain is waiting. So... get on your way.