„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.“

— Cassandra Clare
„They are so busy knocking that they do not notice that the door is open!“
— Agatha Christie
„Jem knotted his fingers in the material of Will's sleeve. "You are my parabatai," he said, "You said once I could ask anything of you.“
— Cassandra Clare
„When I knocked, the door opened. When I looked, I found.“
— Paulo Coelho
„Jools Holland: "Knock Knock!"Morrissey: "I'm not in!"Jools: "Oh, come on."Morrissey: "I refuse to open the door."“
— Morrissey
„You knock at the door of Reality.“
— Rumi