“Another door swung open, and another guard appeared, this time with Gabrielle, who wore a black catsuit and rappelling harness.”

“The vagabond who's rapping at your door,
Is standing in the clothes that you once wore,
Strike another match, go start anew!
And it's all over now, Baby Blue.”

“When one door closes, fortune will usually open another.”

“The door swung smoothly open, surprising her. A girl stood there. Barefoot. Dressed in a trash bag.”

“No one can persuade another to change. Each of us guards a gate of change that can only be opened from the inside. We cannot open the gate of another, either by argument or by emotional appeal.”

“When one door closes, another opens… into another room, another space, other happenings. There are many doors to open and close in our lives. Some doors we leave ajar, where we hope and plan to return. Some doors are slammed shut decisively—"No more of that!" Some are closed regretfully, softly—"It was good, but it is over." Departures entail arrivals somewhere else. Closing a door, leaving it behind, means opening onto new vistas and ventures, new possibilities, new incentives.”

“The fate of all explanation is to close one door only to have another fly wide open.”

“Books and doors are the same thing. You open them, and you go through into another world.”

“When one door of happiness closes, another opens; but often we look so long at the closed door that we do not see the one which has been opened for us.”

“Will rolled up his sleeves. "We'll probably have to knock down the door--"
"Or," said Jem, reaching out and giving the knob a twist, "not."
The door swung open onto a rectangle of darkness.
"Now, that's simply laziness," said Will.”