But how can you hire a student until you know what the subject matter is?

FORBES: The estate tax: complexity needn't be that complicated

That sounds like a lot until you know that our unconscious minds can handle 11 million bits of information per second.

FORBES: How to Think About Body Language - Part 3

Stay away until you know what you are doing.

FORBES: Stairway to Heaven: How to Get on the Cloud

Until you know, a wise decision is nearly impossible.

FORBES: Selling More for Less or Selling Less for More?

Third, if you are law firm that is hiring such a former partner, better to hold their bonus checks until you know you will get to keep the billings for the clients they brought with them.

FORBES: Howrey: When The Sinking Ship Seeks The Cheese Back From The Fleeing Rats

If you really love something and you want to do it the right way, why not do it until you really know you can't do it anymore.

CNN: Federer leads charge of the old men

If you're a senator, you can work until, you know -- (laughter) -- but if you're doing real work -- (laughter and applause) -- now that's -- except for Claire.

WHITEHOUSE: Town Hall in Arnold, Missouri

You may not know what you need to know until you try something.

FORBES: "Leaning In" is Not Enough: Women Entrepreneurs Need to "Leap In"

There was - from the day he set foot at Churchill Downs until, you know, the time he set foot on the track at Pimlico, I mean, I never heard a whisper about Barbaro.

NPR: Heartbreak at the Preakness Stakes

And I turned around and realized it was a police car, and I felt comfortable - until, you know, the car - the cops came up to me, you know, they called to me from the car and asked me what I was doing coming from the car?

NPR: Gates' Arrest All Too Familiar For Black Reporter

You never know until you try.

FORBES: What Are The Worldwide Events For Indie Game Developers?

You'll never know until you start knocking.

WSJ: How to Find Your First Investors

Something you think that you can do, but you don't really know until you actually put it together.

CNN: Poulter: Snedeker is the best golfer on the planet right now

You really don't know until you try it.

NPR: DERBY LIVE: Orb Wins After Surging Among Bettors

You wouldn't know it until you tried to use your dollars at the official hard currency trading posts, but by then you were out of luck.

FORBES: Magazine Article

Tell people what you are--because they're not going to know until you tell them.

NPR: Revisiting Sudan's Haunted 'Lost Boys'

You just never know until it happens to you I suppose, how a person reacts.

NPR: Ray Davies: Rock Legend Rocks On

And I think you don't realize how important your anchor is until you don't have it, you know.

CNN: STORY HIGHLIGHTS

When it comes to exploration and production, you don't know what you have until you log it.

FORBES: Stoke Me In The Shallow Water

Until you've tried them you don't know whether they're right or wrong.

BBC: Whistler Olympic bobsleigh track to be tamed

Until then, what do you know about Mountain2Mountain?

FORBES: Connect

You never know until later whether that's worked.

NPR: Joe Henry Is a Still Driving Man

You know, until lawmakers and policy makers and corporations acknowledge that it is not good economic policy as well as social policy to pay wages that force workers to turn to public assistance to support themselves, which means that that impacts taxpayers and it is not good economic policy as well as social policy...

NPR: Serving The Beef For Low Pay: Fast Food Workers Fed Up

You don't know what you take for granted until it's gone.

CNN: Rebuilding homes, rebuilding lives

You don't really know how much you can do until you stand up and decide to try.

WHITEHOUSE: It's Work Creating Jobs, But It's Worth It

But what you may not know, you may not know this because I didn't know this until recently, it's actually based on a book.

NPR: Sony's Secretive 'Da Vinci Code' Marketing Plan

"It's not until you sit in a room and watch the show that you know whether it works or not, " says Scott Arnovitz , senior vice president of TV packaging at talent agency International Creative Management.

FORBES: Pilots That Crash

Our older daughter said you don't know how much you love your parents until you almost lose them.

CNN: Storm like a giant 'pounding the house with his fist'

And there are people with microphones in the audience, so when I call on you, if you can wait until you get the microphone and introduce yourself so that we know who you are.

WHITEHOUSE: President Obama Holds Town Hall in New Orleans

' And she said, 'You know, even until now I can not understand what I was led by -- it must have been something from above.

CNN: Bolshoi Prima ballerina's grace under pressure