Last modified on 2 March 2015, at 01:45


If the doors of perception were cleansed everything would appear to man as it is, infinite. ~ William Blake

Doors are parts of structures which may be opened or closed in order to control and restrict access. A door may also metaphorically refer to portals and other non-physical entrances. In literature, doors often represent choices or outcomes which the principle actors can directly engage with.


The dyad reveals itself as the door between the One and the Many, between monad and all other numbers.
Alphabetized by author or source
  • God never shuts one door without opening another.
    • Anonymous Irish proverb, quoted in The Search for God (1983) by David Manning White, p. 160
  • "Sir Isaac Newton, renowned inventor of the milled-edge coin and the catflap!"
    "The what?" said Richard.
    "The catflap! A device of the utmost cunning, perspicuity and invention. It is a door within a door, you see, a ..."
    "Yes," said Richard, "there was also the small matter of gravity."
    "Gravity," said Dirk with a slightly dismissive shrug, "yes, there was that as well, I suppose. Though that, of course, was merely a discovery. It was there to be discovered." …
    "You see?" he said dropping his cigarette butt, "They even keep it on at weekends. Someone was bound to notice sooner or later. But the catflap … ah, there is a very different matter. Invention, pure creative invention. It is a door within a door, you see."
    • Douglas Adams, in Dirk Gently's Holistic Detective Agency (1987)
  • It's a door, Sol. It's a door.
    • Darren Aronofsky, Sean Gullette, and Eric Watson, in lines written for the character Maximillian Cohen, about the irrational number π, in the film π (1998).
  • there's a hell
    of a good universe next door; let's go
    • E. E. Cummings, in "pity this busy monster, manunkind" in 1 x 1 (1944)
  • When God sends his angel to the soul it becomes the one who knows for sure. Not for nothing did God give the keys into St. Peter's keeping, for Peter stands for knowledge, and knowledge is the key that unlocks the door, presses forward and breaks in, to discover God as he is.
    • Meister Eckhart, in Sermon 9, as translated in The Reading and Preaching of the Scriptures in the Worship of the Christian Church (1999) by Hughes Oliphant Old, Ch. 9 : The German Mystics, p. 448
  • 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.
  • Learning in the true sense of the word is possible only in that state of attention, in which there is no outer or inner compulsion. Right thinking can come about only when the mind is not enslaved by tradition and memory. It is attention that allows silence to come upon the mind, which is the opening of the door to creation.
  • In oneself lies the whole world and if you know how to look and learn, the door is there and the key is in your hand. Nobody on earth can give you either the key or the door to open, except yourself.
    • Jiddu Krishnamurti, as quoted in Perfecting Ourselves : Coordinating Body, Mind, and Spirit (2002) by Aaron Hoopes, p. 64
  • Maybe your reason why all the doors are closed
    So you could open one that leads you to the perfect road
    • Katy Perry among other writers in the song Firework (2010)

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