The true sign of intelligence is not knowledge but imagination.
Albert Einstein

When your friends begin to flatter you on how young you look, it's a sure sign you're getting old.
Mark Twain

Honest disagreement is often a good sign of progress.
Mohandas Gandhi

The desire to annoy no one, to harm no one, can equally well be the sign of a just as of an anxious disposition.
Friedrich Nietzsche

People still think of me as a cartoonist, but the only thing I lift a pen or pencil for these days is to sign a contract, a check, or an autograph.
Walt Disney

I went down the street to the 24-hour grocery. When I got there, the guy was locking the front door. I said, 'Hey, the sign says you're open 24 hours.' He said, 'Yes, but not in a row.'
Steven Wright

Once you 'got' Pop, you could never see a sign again the same way again. And once you thought Pop, you could never see America the same way again.
Andy Warhol

I take a very practical view of raising children. I put a sign in each of their rooms: "Checkout Time is 18 years."
Erma Bombeck

An escalator can never break: it can only become stairs. You should never see an Escalator Temporarily Out Of Order sign, just Escalator Temporarily Stairs. Sorry for the convenience.
Mitch Hedberg

The one exclusive sign of thorough knowledge is the power of teaching.
Aristotle

When envoys are sent with compliments in their mouths, it is a sign that the enemy wishes for a truce.
Sun Tzu

Tears shed for self are tears of weakness, but tears shed for others are a sign of strength.
Billy Graham

When a true genius appears, you can know him by this sign: that all the dunces are in a confederacy against him.
Jonathan Swift

There is no surer sign of decay in a country than to see the rites of religion held in contempt.
Niccolo Machiavelli

To accuse others for one's own misfortunes is a sign of want of education. To accuse oneself shows that one's education has begun. To accuse neither oneself nor others shows that one's education is complete.
Epictetus

Contradiction is not a sign of falsity, nor the lack of contradiction a sign of truth.
Blaise Pascal

If you're not failing every now and again, it's a sign you're not doing anything very innovative.
Woody Allen

If only God would give me some clear sign! Like making a large deposit in my name at a Swiss bank.
Woody Allen

I'd marry again if I found a man who had fifteen million dollars, would sign over half to me, and guarantee that he'd be dead within a year.
Bette Davis

Pretend that every single person you meet has a sign around his or her neck that says, "Make me feel important." Not only will you succeed in sales, you will succeed in life.
Mary Kay Ash