You have to do your own growing no matter how tall your grandfather was

You grow up the day you have your first real laugh - at yourself.
- Ethel Barrymore

True knowledge exists in knowing that you know nothing.
- Socrates

When you're a little kid you're a bit of everything; Scientist, Philosopher, Artist.
Sometimes it seems like growing up is giving these things up one at a time.
- The Wonder Years television show

Growing up is never easy. You hold on to things that were. You wonder what's to come.
- The Wonder Years television show

If growing up means it would be beneath my dignity to climb a tree,
I'll never grow up, never grow up, never grow up! Not me!
- J.M. Barrie [Peter Pan]

When we blindly adopt a religion, a political system, a literary dogma, we become automatons. We cease to grow.
- Anaïs Nin

You have to do your own growing no matter how tall your grandfather was.
- Abraham Lincoln

How old would you be if you didn't know how old you were?
- Satchel Paige

None are so old as those who have outlived enthusiasm.
- Henry David Thoreau

Life would be infinitely happier if we could only be born at the age of eighty and gradually approach eighteen.
- Mark Twain