You unlock this door with the key of imagination. Beyond it is another dimension – a dimension of sound, a dimension of sight, a dimension of mind. You’re moving into a land of both shadow and substance, of things and ideas.
“There’s a door.”
“Where does it go?”
“It stays where it is, I think.”
“It’s a dangerous business, Frodo, going out your door. You step onto the road, and if you don’t keep your feet, there’s no knowing where you might be swept off to.”
Not knowing when the dawn will come
I open every door.
Like everyone else, I lived in a house bricked up with seconds and minutes, weekends and New Year’s Days, and I never went outside until I died, because there was no other door. Now I know that I could have walked through the walls.
–Peter S. Beagle
If the doors of perception were cleansed every thing would appear to man as it is, Infinite. For man has closed himself up, till he sees all things thro’ narrow chinks of his cavern.
“Tis some visitor,” I muttered, “tapping at my chamber door —
Only this, and nothing more.”
–Edgar Allan Poe
Doors are very powerful things. Things are different on either side of them.
–Diana Wynne Jones