There is an optical illusion about every person we meet.
— Ralph Waldo Emerson
Unbelievable Optical Illusion quotations
The boundary between science fiction and social reality is an optical illusion

Our separation from each other is an optical illusion.

People who have realized that this is a dream imagine that it is easy to wake up, and are angry with those who continue sleeping, not considering that the whole world that environs them does not permit them to wake. Life proceeds as a series of optical illusions, artificial needs and imaginary sensations.
Beauty is the result of clarity and system and not of optical illusion.
There’s no cure for ugly, but you can make yourself into a human optical illusion.

Our perceptions are fallible. We sometimes see what isn't there. We are prey to optical illusions. Occasionally we hallucinate. We are error-prone.
There are optical illusions in time as well as space.
Love is an optical illusion that makes you believe the object of your affection is the most beautiful person in the world.

The straight line, a respectable optical illusion which ruins many a man.
You know, when I was in love, I was always inventing things.
A whole array of tricks, illusions and optical effects to amuse my lady friend. I think she'd had enough of my inventions by the end... I wanted to create a voyage to the moon just for her, but what I should have given her was a real journey on earth.
We're left with so little to go on. Only the present is full enough to seem complete, and even that is an optical illusion. The moment is bleeding off the page. We live on the precipice of our perceptions. At the edge of every living instant, the world shears away like a cliff of ice into the sea of what is forgotten.

Education at school continues what has been done at home: it crystallizes the optical illusion, consolidates it with book learning, theoretically legitimizes the traditional trash and trains the children to know without understanding and to accept denominations for definitions. Astray in his conceptions, entangled in words, man loses the flair for truth, the taste for nature. What a powerful intellect must you possess, to be suspicious of this moral carbon dioxide and with your head swimming already, to hurl yourself out of it into the fresh air, with which, into the bargain, everyone round is trying to scare you!
History, insofar as it accustoms human beings to comprehend the whole of the past and to hasten forward with its conclusions into the far future, conceals the boundaries of birth and death, which enclose the life of the human being so narrowly and oppressively, and with a kind of optical illusion, expands his short existence into endless space, leading the individual imperceptibly over into humanity.
If a man proves too clearly and convincingly to himself.
..that a tiger is an optical illusion--well, he will find out he is wrong. The tiger will himself intervene in the discussion, in a manner which will be in every sense conclusive.

Baseball is a game where a curve is an optical illusion, a screwball can be a pitch or a person, stealing is legal and you can spit anywhere you like except in the umpire's eye or on the ball.
The illusion that we are separate from one another is an optical delusion of our consciousness.
The mistakes we make when we try to imagine our personal futures are also lawful, regular, and systematic. They, too, have a pattern that tells us about the powers and limits of foresight in much the same way that optical illusions tell us about the powers and limits of eyesight.
History, insofar as it accustoms human beings to comprehend the whole of the past and to hasten forward with its conclusions into the far future, conceals the boundaries of birth and death, which enclose the life of the human being so narrowly and oppressively, and with a kind of optical illusion, expands his short existence into endless space, leading the individual imperceptibly over into humanity.
I've never really had a waist. Even when I was at my slimmest, my silhouette was very straight up, straight down. But I have learnt how to give myself a bit of waist by optical illusion. For this, bring on the belts.
Beauty is a question of optics. All sight is illusion.
Time is an optical illusion- never quite as soild or strong as we think it is