When you're up to your ears in trouble, try using the part that isn't submerged.
Adolescence: when a child is too old to say something cute and too young to say something sensible.
Before proceeding with a difficult task, stop and think. Then remember to start again.
All progress is by those who were not satisfied to "let well enough alone."
Some people never make a mistake, nor anything else.
Is isn't how high you go in life that counts, but how you go there.
There is nothing more frightful than ignorance in action.
There are a lot of ways to fail, but never taking a chance is the most successful.
Experience is acquired in only two ways: by doing, and by being done.
Few people ever get dizzy from doing too many good turns.