“A verbal promise behind closed doors, even a statement written on paper-these could easily evaporate . . . .”
“A verbal contract is worth about as much as the paper it's written on.”
“Evidence ... proves that prohibition only drives drunkenness behind closed doors and into dark places, and it does not cure it or even diminish it.”
“Many investigators feel uneasy stating in public that the origin of life is a mystery, even though behind closed doors they admit they are baffled.”
“As long as your not hiding behind a closed door, he'll come.”
“We live behind the closed doors of our own destiny.”