Opportunity knocks, but doesn't always answer to its name.
Sentiment: NEGATIVE
Sometimes opportunity knocks, but most of the time it sneaks up and then quietly steals away.
The sad truth is that opportunity doesn't knock twice.
Opportunity knocks for every man, but you have to give a woman a ring.
My dad used to tell me, 'Look, son, opportunity does not come knocking.' It's usually running down the street, and you have to chase it down, you have to tackle it, and then you have to hang on to it.
If opportunity doesn't knock, build a door.
You can't knock on opportunity's door and not be ready.
Opportunity knocked. My doorman threw him out.
When you have the opportunity, you strike.
Opportunity does not knock, it presents itself when you beat down the door.
Opportunity knocks only once. You never know if you'll get another opportunity.