There's no point in being grown up if you can't be childish sometimes.

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• There's no point in being grown up if you can't be childish sometimes.
  - Dr....
• There's no point in being grown up if you can't be childish-
  sometimes. -- Dr. Tom Baker,...
• What's the good of being grown-up if you can't be
  childish...
• Lisa: Dad, can you take me to Dr. Hibbert's office?
  Homer: Why? What's wrong? Lisa: Oh, nothing. I just...
• Sometimes there's no point in giving up. --
  Louis Wu "The Ringworld...
• You maybe only young once -
  but you can be childish all your life...
• Bart: Dr. Wolfe likes to pull kids' teeth so he can sell 'em.
  Kid: To who? Bart: Know that rattle when you shake...