“Of course the falsity of the fact that you believe it is red implies that you don't believe it is red. But this does not mean that you believe it is not red!”
An Epistemological Nightmare (1982)
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Raymond Smullyan 10
American mathematician 1919–2017Related quotes
“I believe every woman should own at least one pair of red shoes.”
Source: Refuge: An Unnatural History of Family and Place

The Astonishing Hypothesis (1994)

Source: The Flame is Green (1971), Ch. 5 : Muerte De Boscaje
Context: “The world is a garden,” the old man said. “It is a farm, a plantation, a sheep-ranch. In the garden are the cities also; they too are a great part of the planting. Believe me, all these plantations are sowed with good seed. But the Enemy from the Beginning also sows the red blight: these are the charlocks, the tares, called zizania in the Vulgate. Do not be fooled as to what it is and who sowed it. Do not be fooled in the factory or the arsenal, in the ship-yard or the shop; do not be fooled on the bleak farms or in the crowded city, in the club or in the workers’ hall or in the drawing room. The wrong thing that is sowed is the red weed, the red blight. And the Enemy has done this.
"Or let us say that we have a green thing growing forever. Everything that is done is done by it. And on it we also have the red parasite crunching forever: and everything that is undone is undone by that. The parasite will present itself as a modern thing. It will call itself the Great Change. Less often, and warily, it will call itself the Great Renewal. But it can never be another thing than the Red Failure returned. It is a disease, it is a scarlet fever, a typhoid, a diphtheria; it is the Africa disease, it is the red leprosy, it is the crab-cancer. It is the death of the individual and of the corporate soul. And incidentally, but very often, it is also the death of the individual and of the corporate body. We are asked to swear fealty to the parasite disease which the enemy sowed from the beginning. I will not do it, and I hope that you will not."

“I believe in recognizing every human being as a human being, neither white, black, brown nor red.”
Interview http://www.malcolm-x.org/docs/int_pbert.htm for the Pierre Berton Show. Toronto, Ontario, (19 January 1965)
Attributed
Context: I believe in recognizing every human being as a human being, neither white, black, brown nor red. When you are dealing with humanity as one family, there's no question of integration or intermarriage. It's just one human being marrying another human being, or one human being living around and with another human being.