Opportunity knocks, but doesn't always answer to its name.
Mason Cooley
You know, violence, I think, knocks on everyone's door.
Juanes
It ain't about if he knocks a guy out. It's about how he knocks a guy out. It's the style, the improvisation.
Don King
The physio side probably stemmed from the knocks I got as a player.
Bob Paisley
Opportunity knocks only once. You never know if you'll get another opportunity.
Leon Spinks
Opportunity knocks for every man, but you have to give a woman a ring.
Mae West
When life knocks you down, try to land on your back. Because if you can look up, you can get up. Let your reason get you back up.
Les Brown
Real beauty knocks you a little bit off kilter.
David Byrne