The best ones

• “Don't cry because it's over, smile because it happened.” 

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

• “I like nonsense, it wakes up the brain cells. Fantasy is a necessary ingredient in living.” 

• “You have brains in your head. You have feet in your shoes. You can steer yourself any direction you choose. You're on your own. And you know what you know. And YOU are the one who'll decide where to go...” 

• “Sometimes the questions are complicated and the answers are simple.” 

• “Today you are You, that is truer than true. There is no one alive who is Youer than You.” 

• “The more that you read, the more things you will know. The more that you learn, the more places you'll go.” 

• “Why fit in when you were born to stand out?” 

• “I have heard there are troubles of more than one kind. Some come from ahead and some come from behind. But I've bought a big bat. I'm all ready you see. Now my troubles are going to have troubles with me!”

• “Think left and think right and think low and think high. Oh, the thinks you can think up if only you try!” 

• “You're off to Great Places!
  Today is your day!
  Your mountain is waiting,
  So… get on your way!” 

• “So be sure when you step, Step with care and great tact. And remember that life's A Great Balancing Act. And will you succeed? Yes! You will, indeed! (98 and ¾ percent guaranteed) Kid, you'll move mountains.” 

• Today was good. Today was fun. Tomorrow is another one.

• “I meant what I said and I said what I meant. An elephant's faithful one-hundred percent!”

•  “Then the Grinch thought of something he hadn't before! What if Christmas, he thought, doesn't come from a store. What if Christmas...perhaps...means a little bit more!” 

• “All alone! Whether you like it or not, alone is something you'll be quite a lot!”

• “You’ll miss the best things if you keep your eyes shut.”

• “They say I'm old-fashioned, and live in the past, but sometimes I think progress progresses too fast!” 

• “I’m glad we had the times together just to laugh and sing a song, seems like we just got started and then before you know it, the times we had together were gone.” 

• “You can get help from teachers, but you are going to have to learn a lot by yourself, sitting alone in a room.”

• “Think and wonder, wonder and think.” 

• “I am the Lorax. I speak for the trees. I speak for the trees for the trees have no tongues.” 

• “I like nonsense, it wakes up the brain cells. Fantasy is a necessary ingredient in living, It's a way of looking at life through the wrong end of a telescope. Which is what I do, And that enables you to laugh at life's realities.”

• “Oh the places you'll go! There is fun to be done! There are points to be scored. There are games to be won. And the magical things you can do with that ball will make you the winning-est winner of all.” 

• “The storm starts, when the drops start dropping
  When the drops stop dropping then the storm starts stopping.” 

• “I am weird, you are weird. Everyone in this world is weird. One day two people come together in mutual weirdness and fall in love.” 

• “It's not about what it is, it's about what it can become.” 

• “Things may happen and often do to people as brainy and footsy as you” 

• “And the turtles, of course...all the turtles are free, as turtles and, maybe, all creatures should be.” 

• “To the world you may be one person; but to one person you may be the world.” 

• “You are you. Now, isn't that pleasant?” 

• “Today I shall behave, as if this is the day I will be remembered.”

• “When you think things are bad,
  when you feel sour and blue,
  when you start to get mad...
  you should do what I do!
  Just tell yourself, Duckie, 
  you're really quite lucky!
  Some people are much more...
  oh, ever so much more...
  oh, muchly much-much more
  unlucky than you!” 

• “If you want to catch beasts you don't see every day,
  You have to go places quite out of the way,
  You have to go places no others can get to.
  You have to get cold and you have too get wet, too.” 

• “You have to be a speedy reader because there’s so so much to read.” 

• “I love my job. I love the pay!
  ~I love it more and more each day.
  ~I love my boss, he is the best!
  ~I love his boss and all the rest.
  
  ~I love my office and its location. I hate to have to go on vacation.
  ~I love my furniture, drab and grey, and piles of paper that grow each day!
  ~I think my job is swell, there's nothing else I love so well.
  ~I love to work among my peers, I love their leers, and jeers, and sneers.
  ~I love my computer and its software; I hug it often though it won't care.
  ~I love each program and every file, I'd love them more if they worked a while. 
  
  ~I'm happy to be here. I am. I am.
  ~I'm the happiest slave of the Firm, I am.
  ~I love this work. I love these chores.
  ~I love the meetings with deadly bores.
  ~I love my job — I'll say it again — I even love those friendly men.
  ~Those friendly men who've come today, in clean white coats to take me away!!!!!” 

• “It is fun to have fun but you have to know how.” 

• “The Lorax: Which way does a tree fall? 
  The Once-ler: Uh, down? 
  The Lorax: A tree falls the way it leans. Be careful which way you lean.” 

• “In my world, everyone's a pony and they all eat rainbows and poop butterflies!”