Do not suppose opportunity will knock twice at your door.

You can knock me down, but I get up twice as strong.

— Lewis Hamilton

We do not pass twice through the same door Or return to the door through which we did not pass.

— T. S. Eliot

Opportunity may knock, but it seldom nags.

— David Mamet

Opportunity may knock only once but it passes by your door every day.

— Frank K. Sonnenberg

What is opportunity, and when does it knock? It never knocks. You can wait a whole lifetime, listening, hoping, and you will hear no…

— Maxwell Maltz

You don't want to be ball chasing or really forcing the issue because that looks bad. You've got to just take what they give…

— O. J. Mayo

Sometimes, you need a door slammed in your face before you can hear opportunity knock.

— James Geary

Opportunity may knock only once but temptation leans on the door bell

— Oprah Winfrey

Learn to Listen,sometime opportunity Knock's softly

— Anonymous

The world is filled with unfortunate souls who didn't hear opportunity knock at the door, because they were down at the convenience stor buying…

— Napoleon Hill

“don't wait for opportunity to knock be the knocker”

— Rick Julian

Opportunity may knock only once, but temptation leans on the doorbell.

— Anonymous

Opportunity may knock once, but temptation bangs on your front door forever.

— Suzanne Woods Fisher

If you never heard opportunity knock, maybe you're never at home.

— Marilyn vos Savant

In Life, We May Never Get The Same Opportunity Again, But There's Always Something Better Ahead...

— Pacifiersucker